LiqTech International (LIQT) 10-Q 14 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 14, 2017
Document Information [Line Items]
Entity Registrant Name	LIQTECH INTERNATIONAL INC
Entity Central Index Key	1,307,579
Trading Symbol	liqt
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		44,229,264
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Current Assets:
Cash	$ 528,566	$ 1,208,650
Accounts receivable, net	1,613,668	1,111,759
Other receivables	342,556	306,177
Cost in excess of billing	753,615	642,700
Inventories	4,810,497	5,174,874
Prepaid expenses	16,383	62,161
Total Current Assets	8,065,285	8,506,321
Property and Equipment, net accumulated depreciation	2,123,429	2,633,558
Other Assets:
Investments at costs	5,909	5,282
Other intangible assets	3,963	5,614
Deposits	297,719	261,553
Total Other Assets	307,591	272,449
Total Assets	10,496,305	11,412,328
Current Liabilities:
Current portion of notes payable	16,061	15,034
Current portion of capital lease obligations	7,808	45,883
Accounts payable	2,290,345	2,262,688
Accrued expenses	2,197,993	2,385,586
Billing in excess of cost	15,224	106,375
Accrued income taxes payable	580	580
Customers deposits	720,561	192,597
Total Current Liabilities	5,248,572	5,008,743
Long-term notes payable, less current portion	32,521	39,895
Long-term capital lease obligations, less current portion	21,054	93,942
Total Long-Term Liabilities	53,575	133,837
Total Liabilities	5,302,147	5,142,580
Commitment and Contingencies See Note 11
Stockholders' Equity:
Common stock; par value $0.001, 100,000,000 shares authorized 44,229,264 and 36,835,514 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	44,230	36,836
Additional paid-in capital	37,961,723	36,084,117
Accumulated deficit	(27,516,432)	(24,011,343)
Deferred compensation	(58,548)	(148,561)
Other comprehensive income, net	(5,236,815)	(5,691,301)
Total Stockholders' Equity	5,194,158	6,269,748
Total Liabilities and Stockholders' Equity	$ 10,496,305	$ 11,412,328

Consolidated Balance Sheets (C3

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	44,229,264	36,835,514
Common stock, shares outstanding (in shares)	44,229,264	36,835,514

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Sales	$ 2,456,484	$ 3,689,511	$ 8,350,758	$ 11,338,817
Cost of Goods Sold	2,772,451	3,303,042	8,202,634	9,078,036
Gross Profit	(315,967)	386,469	148,124	2,260,781
Operating Expenses:
Selling expenses	521,627	558,105	1,506,369	1,661,352
General and administrative expenses	433,368	498,358	1,518,935	1,830,260
Non-cash compensation expenses	24,055	104,416	150,013	377,140
Research and development expenses	121,680	124,165	375,026	476,734
Total Operating Expense	1,100,730	1,285,044	3,550,343	4,345,486
Loss from Operations	(1,416,697)	(898,575)	(3,402,219)	(2,084,705)
Other Income (Expense)
Interest and other income	2,790		3,093
Interest expense	(3,781)	(7,347)	(23,308)	(23,843)
Loss on currency transactions	(26,913)	(14,060)	(54,600)	(26,219)
Loss on sale of fixed assets	(34,824)		(28,056)
Total Other Income (Expense)	(62,728)	(21,407)	(102,871)	(50,062)
Loss Before (Income) Taxes	(1,479,425)	(919,982)	(3,505,090)	(2,134,767)
Income Tax Expense (Income)		17,646		2,885,932
Net Loss	$ (1,479,425)	$ (937,628)	$ (3,505,090)	$ (5,020,699)
Basic Loss Per Share (in dollars per share)	$ (0.03)	$ (0.02)	$ (0.09)	$ (0.13)
Weighted Average Common Shares Outstanding (in shares)	44,229,264	39,532,035	40,604,129	39,532,035
Diluted Loss Per Share (in dollars per share)	$ (0.03)	$ (0.02)	$ (0.09)	$ (0.13)
Weighted Average Common Shares Outstanding Assuming Dilution (in shares)	44,229,264	39,532,035	40,604,129	39,532,035

Consolidated Statements of Othe

Consolidated Statements of Other Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Loss	$ (1,479,425)	$ (937,628)	$ (3,505,090)	$ (5,020,699)
Currency Translation, Net of Taxes	142,599	66,547	454,487	401,194
Other Comprehensive Loss	$ (1,336,826)	$ (871,081)	$ (3,050,603)	$ (4,619,505)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities:
Net Loss	$ (3,505,090)	$ (5,020,699)
Adjustments to reconcile net (loss) to net cash provided (used) by operations:
Depreciation and amortization	732,963	995,687
Non-cash compensation	150,013	384,795
Bad debt expense (recovery)	(59,409)	23,852
Reserve for obsolete inventory		132,983
Change in deferred tax asset / liability		3,193,214
Loss on sale of equipment	28,056
Changes in assets and liabilities:
(Increase) decrease in restricted cash		292,826
(Increase) decrease in accounts receivable	(478,879)	(1,026,055)
(Increase) decrease in inventory	238,986	(572,709)
(Increase) decrease in prepaid expenses/deposits	26,817	(79,546)
Increase (decrease) in accounts payable	27,657	(649,056)
Increase (decrease) in accrued expenses	340,371	(49,752)
Increase (decrease) long-term contracts	(202,066)	1,271,781
Total Adjustments	804,509	3,918,020
Net Cash Used by Operating Activities	(2,700,581)	(1,102,679)
Cash Flows from Investing Activities:
Purchase of property and equipment	(94,950)	(129,411)
Proceeds from sale of property and equipment	12,827
Net Cash Used by Investing Activities	(82,123)	(129,411)
Cash Flows from Financing Activities:
Net payments on capital lease obligation	(110,963)	(112,566)
Payments on loans payable	(6,347)	(21,210)
Proceeds from issuance of common stock and warrants	1,825,000
Net Cash Provided by (Used in) Financing Activities	1,707,690	(133,776)
Gain on Currency Translation	394,930	232,958
Net Increase (Decrease) in Cash and Cash Equivalents	(680,084)	(1,132,908)
Cash and Cash Equivalents at Beginning of Period	1,208,650	1,370,591
Cash and Cash Equivalents at End of Period	528,566	237,683
Supplemental Disclosures of Cash Flow Information:
Interest Paid	23,308	23,843
Income Taxes		570
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Non-cash compensation	150,013	384,795
Total	150,013	377,140
Employee Stock Option [Member]
Adjustments to reconcile net (loss) to net cash provided (used) by operations:
Non-cash compensation	58,038	272,665
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Non-cash compensation	58,038	272,665
Restricted Stock [Member]
Adjustments to reconcile net (loss) to net cash provided (used) by operations:
Non-cash compensation	78,750	58,250
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Non-cash compensation	78,750	58,250
Warrants Issued for Services [Member]
Adjustments to reconcile net (loss) to net cash provided (used) by operations:
Non-cash compensation	13,225	46,225
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Non-cash compensation	$ 13,225	$ 46,225

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Significant Accounting Policies [Text Block]	NOTE 1 Business and Basis of Presentation The consolidated financial statements include the accounts of LiqTech International, Inc. (“Parent”) and its subsidiaries. The terms "Company", “us", "we" and "our" as used in this report refer to Parent and its subsidiaries, which are set forth below. The Company engages in the development, design, production, marketing and sale of automated filtering systems, liquid filters, diesel particulate air filters and kiln furniture in United States, Canada, Europe, Asia and South America. Set forth below is a description of Parent and each of its subsidiaries: LiqTech International, Inc., a Nevada corporation (Parent) organized in July 2004, LiqTech USA, a Delaware corporation and a wholly owned subsidiary of Parent formed in May 2011. LiqTech International AS, a Danish corporation, incorporated on January 15, 2000 ( 100% LiqTech NA, Inc. (“LiqTech NA”), incorporated in Delaware on July 1, 2005, 100% LiqTech Germany (“LiqTech Germany”) a 100% December 9, 2011, no 2017. LiqTech PTE Ltd. (“LiqTech Sing”) a 95% January 19, 2012, no 2017. LiqTech Systems A/S ("LiqTech Systems"), a Danish corporation (formerly Provital Solutions A/S) was incorporated on September 1, 2009 July 31, 2014. Consolidation -- Functional Currency / Foreign Currency Translation -- The functional currency of LiqTech International, Inc., LiqTech USA, Inc. and LiqTech NA is the U.S. Dollar. The Functional Currency of LiqTech Int. DK and LiqTech Systems is the Danish Krone (“DKK”), the functional currency of LiqTech Germany is the Euro and the functional currency of LiqTech Singapore is the Singapore Dollar. The Company’s reporting currency is U.S. Dollar for the purpose of these financial statements. The foreign subsidiaries balance sheet accounts are translated into U.S. Dollars at the period-end exchange rates and all revenue and expenses are translated into U.S. Dollars at the average exchange rates prevailing during the three nine September 30, 2017 2016. Cash, Cash Equivalents and Restricted Cash -- The Company considers all highly liquid debt instruments purchased with a maturity of three no September 30, 2017 December 31, 2016. Accounts Receivable -- Accounts receivables consist of trade receivables arising in the normal course of business. The Company establishes an allowance for doubtful accounts, which reflects the Company’s best estimate of probable losses inherent in the accounts receivable balance. The Company determines the allowance based on known troubled accounts, historical experience, and other currently available evidence. The roll forward of the allowance for doubtful accounts for the nine September 30, 2017 December 31, 2016 2017 2016 Allowance for doubtful accounts at the beginning of the period $ 2,128,452 $ 1,087,871 Bad debt expense (59,409 ) 1,437,949 Amount of receivables written off (31,609 ) (252,792 ) Effect of currency translation 252,482 (144,576 ) Allowance for doubtful accounts at the end of the period $ 2,289,916 $ 2,128,452 Inventory -- Inventory is carried at the lower of cost or market, as determined on the first first Property and Equipment -- Property and equipment are stated at cost. Expenditures for major renewals and betterments that extend the useful lives of property and equipment are capitalized, upon being placed in service. Expenditures for maintenance and repairs are charged to expense as incurred. Depreciation is computed for financial statement purposes on a straight-line basis over the estimated useful lives of the assets which range from three ten 4 Long-Term Investments -- Investments in non-consolidated companies are included in long-term investments in the consolidated balance sheet and are accounted for under the cost method and equity method. For these non-quoted investments, we regularly review the assumptions underlying the operating performance and cash flow forecasts based on information requested from these privately held companies. Generally, this information may may not may Intangible Assets -- Definite life intangible assets include patents. The Company accounts for definite life intangible assets in accordance with Financial Accounting Standards Board, (“FASB”) Accounting Standards Codification, (“ASC”) Topic 350, two ten Goodwill -- Goodwill is evaluated for impairment annually, and whenever events or changes in circumstances indicate the carrying value of goodwill may not may not Revenue Recognition and Sales Incentives -- The Company accounts for revenue recognition in accordance with the Securities and Exchange Commission Staff Accounting Bulletin No. 101, 101 605 The Company has received long-term contracts for the installation of various water filtrations systems and grants from government entities for development and use of silicon carbide membranes in various water filtration and treatment applications. Revenues from long-term contracts and grants are recognized on the percentage-of-completion method, measured by the percentage of project costs incurred to date to estimated total project costs for each long-term contract or grant multiplied by the long-term contract or grant income on a project-by-project basis. This method is used because management considers costs incurred to be the best available measure of progress on contracts in process. Project costs of the long-term contracts and grants include all direct material and labor costs and those indirect costs related to the project. Project costs are capitalized and accreted into cost of sales based on the percentage of the project completed. Should a loss be estimated on an incomplete project it would be recorded in the period in which such a loss is determined. Changes in estimated profitability of a project are recognized in the period in which the revisions are determined. The aggregate of costs incurred and income recognized on incomplete projects are recorded as costs in excess of billings and are shown as a current asset. The aggregate of billings in excess of related costs incurred and income recognized on projects is shown as a current liability. In Denmark, Value Added Tax (“VAT”) of 25% not Advertising Cost -- Cost incurred in connection with advertising of the Company’s products is expensed as incurred. Such costs amounted to $9,270 $21,307 nine September 30, 2017 2016, Research and Development Cost -- The Company expenses research and development costs for the development of new products and systems as incurred. Included in operating expense for the nine September 30, 2017 2016 $375,026 $476,734, Income Taxes -- The Company accounts for income taxes in accordance with FASB ASC Topic 740 Income (Loss) Per Share -- The Company calculates earnings (loss) per share in accordance with FASB ASC 260 not Stock Options and Awards -- The Company has granted stock options and awards to certain key employees and directors. See Note 14. 718, $150,013 $377,140 $26,775 $18,445 nine September 30, 2017 2016, Fair Value of Financial Instruments --The Company accounts for fair value measurements for financial assets and financial liabilities in accordance with FASB ASC Topic 820. three ● Level 1. liabilities; ● Level 2. ● Level 3. no reporting entity to develop its own assumptions. Unless otherwise disclosed, the fair value of the Company ’s financial instruments including cash, accounts receivable, prepaid expenses, investments, accounts payable, accrued expenses, capital lease obligations and notes payable approximates their recorded values due to their short-term maturities. Accounting Estimates -- The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets allowance for doubtful accounts receivable, cost in excess of billings, reserve for obsolete inventory, depreciation and impairment of property plant and equipment and impairment of goodwill and liabilities billings in excess of cost commitment and contingencies, the disclosures of contingent assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. Actual results could differ from those estimated. Recent Accounting Pronouncements -- In May 2014, July 9 2015, one first 2018 not In February 2016, one first 2019. not Other recent accounting pronouncements issued by the FASB did not not ’s present or future financial statements.

Note 2 - Going Concern

Note 2 - Going Concern	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	NOTE 2 The accompanying consolidated financial statements have been prepared in conformity with generally accepted accounting principles of the United States of America, which contemplate continuation of the Company as a going concern. However, the Company has limited cash and incurred significant recent losses. These factors raise substantial doubt about the ability of the Company to continue as a going concern. There is no not

Note 3 - Inventory

Note 3 - Inventory	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Inventory Disclosure [Text Block]	NOTE 3 Inventory consisted of the following at September 30, 2017 December 31, 2016: 2017 2016 Furnace parts and supplies $ 375,529 $ 336,799 Raw materials 1, 218,256 1,216,098 Work in process 2,592,894 2,499,242 Finished goods and filtration systems 1,934,569 2,544,080 Reserve for obsolescence (1, 310,751 ) (1,421,345 ) Net Inventory $ 4,810,497 $ 5,174,874

Note 4 - Property and Equipment

Note 4 - Property and Equipment	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	NOTE 4 - PROPERTY AND EQUIPMENT Property and equipment consisted of the following at September 30, 2017 December 31, 2016: Useful Life 2017 2016 Production equipment 3 - 10 $ 10,031,780 $ 10,370,462 Lab equipment 3 - 10 85,766 76,658 Computer equipment 3 - 5 199,184 185,652 Vehicles 3 - 5 74,164 39,090 Furniture and fixture 5 104,431 146,453 Leasehold improvements 10 1,063,722 955,563 11,559,047 11,773,878 Less Accumulated Depreciation (9,435,618 ) (9,140,320 ) Net Property and Equipment $ 2,123,429 $ 2,633,558 Depreciation expense amounted to $ 731,312 $992,418 nine September 30, 2017 2016, 9.

Note 5 - Investments at Costs

Note 5 - Investments at Costs	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	NOTE 5 The following tables summarize Level 1, 2 3 As of September 30, 2017 Level 1 Level 2 Level 3 Investments - - 5,909 Total - - 5,909 As of December 31, 2016 Level 1 Level 2 Level 3 Investments - - 5,282 Total - - 5,282 At September 30, 2017 2016, $5,909 $5,282

Note 6 - Definite-life Intangib

Note 6 - Definite-life Intangible Assets	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	NOTE 6 - DEFINITE-LIFE INTANGIBLE ASSETS At September 30, 2017 December 31, 2016, $3,963 $5,614, two ten nine September 30, 2017 2016 $1,651 $3,269, Year ending December 31, Amortization Expenses 2017 755 2018 2,540 2019 668 Thereafter - $ 3,963

Note 7 - Goodwill

Note 7 - Goodwill	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Goodwill Disclosure [Text Block]	NOTE 7 The Company recorded Goodwill in connection with the acquisition of LiqTech Systems. Goodwill is evaluated for impairment annually in the fourth ’s fiscal year, and whenever events or changes in circumstances indicate the carrying value of goodwill may not may not $7,343,208 December 31, 2016, not 2016 fourth

Note 8 - Notes Payable

Note 8 - Notes Payable	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Long-term Debt [Text Block]	NOTE 8 - NOTES PAYABLE The Company had a 4.02% 48,582 $54,929 September 30, 2017 December 31, 2016. $1,477, August 1, 2020 The following represents the future maturities of long-term debt as of September 30, 2017: Year ending December 31, Payments 2017 $ 3,947 2018 16,234 2019 16,897 2020 11,504 Thereafter - $ 48,582 Long-term notes payable, less current portion $ 32,521 Current portion of notes payable $ 16,061

Note 9 - Lines of Credit

Note 9 - Lines of Credit	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Debt Disclosure [Text Block]	NOTE 9 - LINES OF CREDIT In connection with certain orders, we have to give the customer a working guarantee or a prepayment guarantee or security bond. For that purpose, we have a guarantee credit line of DKK 94,620 $15,000 September 30, 2017) September 30, 2017, 94,620 $15,000

Note 10 - Leases

Note 10 - Leases	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Leases of Lessee Disclosure [Text Block]	NOTE 10 - LEASES Operating Leases -- The Company leases office and production facilities under operating lease agreements expiring in March 2021, August 2018, May 2018. The future minimum lease payments for non-cancelable operating leases having remaining terms in excess of one September 30, 2017 Year ending December 31, Lease Payments 2017 162,739 2018 467,758 2019 179,094 2020 182,676 2021 30,546 Thereafter - Total Minimum Lease Payments $ 1,022,813 Lease expense charged to oper ations was $481,001 $559,755 nine September 30, 2017 2016, Capital Leases -- The Company leases equipment on various variable rate capital leases currently calling for monthly payments of approximately $661 $595 July 2018. September 30, 2017 December 31, 2016, $1,267,773 $1,240,358, $1,230,832 $1,126,550, During the nine September 30, 2017 2016 $39,445, $103,219, nine September 30, 2017 2016, $6,216 $13,770, The following represents future minimum capital lease payments as of September 30, 2017: Year ending December 31, Lease Payments 2017 3,766 2018 26,538 Thereafter - Total minimum lease payments 30,304 Less amount representing interest (1,442 ) Present value of minimum lease payments 28,862 Less Current Portion (7,808 ) $ 21,054

Note 11 - Agreements and Commit

Note 11 - Agreements and Commitments	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 11 - AGREEMENTS AND COMMITMENTS 401 -- LiqTech NA has a 401 nine September 30, 2017 2016, $8,636 $9,291, Contingencies -- From time to time, we may On September 9, 2014, 60% 40% 750,000 As of August 14, 2017, 2017. In connection with certain orders, we have to give the customer a working guarantee or a prepayment guarantee or security bond. For that purpose, we have a guarantee line of DKK 94,620 $15,000 September 30, 2017) September 30, 2017, 94,620 $15,000 September 30, 2017)

Note 12 - Income Taxes

Note 12 - Income Taxes	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 12 - INCOME TAXES The Company accounts for income taxes in accordance with FASB ASC Topic 740, ’s future earnings, and other future events, the effects of which cannot be determined. In accordance with prevailing accounting guidance, the Company is required to recognize and disclose any income tax uncertainties. The guidance provides a two first not second 50%. As of September 30, 2017, $10,857,383 2036; $8,645,417 not $491,212 not $637,307 not As of September 30, 2017 December 31, 2016, $3,491,779 $3,542,000 $2,116,505 $1,095,000 $137,000 $122,000 $108,000 $97,000 not not The Company is not 7 The temporary differences, tax credits and carry forwards gave rise to the following deferred tax asset (liabilities) at September 30, 2017 December 31, 2016: 2017 2016 Vacation accrual $ 5,450 $ 5,450 Allowance for doubtful accounts 1,202 1,202 Reserve for obsolete inventory 213,745 200,118 Business tax credit carryover 30,935 30,935 Deferred Compensation 50,512 8,500 Net operating loss carryover 5,838,958 4,906,974 Excess of book over tax depreciation (287,072 ) (296,227 ) Valuation allowance (5,853,730 ) (4,856,952 ) Long term deferred tax asset $ - $ - A reconciliation of income tax expense at the federal statutory rate to income tax expense at the Company ’s effective rate is as follows for the nine September 30, 2017 2016: 2017 2016 Computed tax at expected statutory rate $ (1,191,730 ) $ (725,821 ) State and local income taxes, net of federal benefit - - Non-US income taxed at different rates 186,512 15,135 Valuation allowance 1,005,218 3,553,605 Other - 43,013 Income tax expense (benefit) $ - $ 2,885,932 The components of income tax expense (benefit) from continuing operations for the nine September 30, 2017 2016 2017 2016 Current income tax expense: Danish $ - $ (577,892 ) Federal - - State - - Current tax (benefit) $ - $ (577,892 ) Book in excess of tax depreciation $ - $ - Deferred rent - - Business tax credit carryover - - Net operating loss carryover 440,787 (88,023 ) Valuation allowance (440,787 ) 3,551,847 Deferred compensation - - Accrued vacation - - Reserve for obsolete inventory - - Deferred tax expense (benefit) $ - $ 3,463,824 Total tax expense (benefit) $ - $ 2,885,932 Deferred income tax expense / (benefit) results primarily from the reversal of temporary timing differences between tax and financial statement income. The Company files Danish, U.S. federal and Minnesota state income tax returns. LiqTech International AS is generally no 2012 no 2013

Note 13 - Income (Loss) Per Sha

Note 13 - Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 13 - INCOME (LOSS) PER SHARE The following data shows the amounts used in computing earnings per share and the effect on income and the weighted average number of shares of potential dilutive common stock for the nine September 30, 2017 2016: For the Three Months Ended September 30 For the Nine Months Ended September 30 2017 2016 2017 2016 Net Loss $ (1,479,425 ) $ (937,628 ) $ (3,505,090 ) $ (5,020,699 ) Weighted average number of common shares used in basic earnings per share 44,229,264 39,532,035 40,604,129 39,532,035 Effect of dilutive securities, stock options and warrants - - - - Weighted average number of common shares and potentially dilutive securities 44,229,264 39,532,035 40,604,129 39,532,035 For the nine September 30, 2017, 455,000 $0.74 $1.01 700,000 $0.81 $1.65 not For the nine September 30, 2016, 1,046,000 $0.74 $1.90 7,325,575 $0.81 $4.06 not

Note 14 - Stockholders' Equity

Note 14 - Stockholders' Equity	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	NOTE 14 Common Stock -- Parent has 100,000,000 $0.001 September 30, 2017 December 31, 2016, 44,229,264 36,835,514 Voting one not Dividends may may Liquidation Rights Other Matters no no Preferred Stock -- Our Board of Directors has the authority to issue Parent preferred stock in one may may Common Stock Cancelation On December 31, 2016, 2,696,521 2014, 2015 2016 Common Stock Issuance On April 13, 2015, 100,000 $75,000 to a member of the Board of Directors. The Company will recognize the non-cash compensation of the award over the requisite service period, of which 33,333 January 1, 2016, 33,333 January 1, 2017 33,334 January 1, 2018. On January 2, 2016, 27,253 $20,167 On January 2, 2017, 93,750 $60,000 On May 19, 2017, 7,300,000 $0.25 $1,825,000 For the nine September 30, 2017 2016, $78,750 $58,250, Common Stock Purchase Warrants A summary of the status of the warrants outstanding at September 30, 2017 Warrants Outstanding Warrants Exercisable Exercise Prices Number Outstanding Weighted Average Weighted Average Exercise Price Number Exercisable Weighted Average $ 0.81 100,000 0.25 $ 0.81 100,000 $ 0.81 $ 1.00 200,000 0.25 $ 1.00 200,000 $ 1.00 $ 1.65 400,000 1.83 $ 1.65 400,000 $ 1.65 Total 700,000 1.15 $ 1.34 700,000 $ 1.34 At September 30, 2017, zero $13,225 nine September 30, 2017 The exercise price of the warrants and the number of shares underlying the warrants are subject to adjustment for stock dividends, subdivisions of the outstanding shares of common stock and combinations of the outstanding shares of common stock. For so long as the warrants remain outstanding, we are required to keep reserved from our authorized and unissued shares of common stock a sufficient number of shares to provide for the issuance of the shares of common stock underlying the warrants. On February 15, 2016, 100,000 $0.81 December 31, 2017. Stock Options In August 2011, ’s Board of Directors adopted a Stock Option Plan (the “Plan”). Under the terms and conditions of the Plan, the Board of Directors is empowered to grant stock options to employees, officers, and directors of the Company. At September 30, 2017, 455,000 The Company recognizes compensation costs for stock option awards to employees , during 2016, LiqTech International, Inc. Expected term (in years) 10 Volatility 76.87 % Risk free interest rate 2.24 % Dividend yield 0 % The Company recognized stock based compensation expense related to the options of $58,038 $272,665 nine September 30, 2017 2016, September 30, 2017, $28,206 December 31, 2025. A summary of the status of the options outstanding under the Plan at September 30, 2017 Options Outstanding Options Exercisable Exercise Prices Number Outstanding Weighted Average Life (years) Weighted Average Number Exercisable Weighted Average $ 0.74 325,000 2.87 $ 0.74 108,333 $ 0.74 $ 1.01 130,000 8.22 $ 1.01 130,000 $ 1.01 Total 455,000 4.40 $ 0.82 238,333 $ 0.89 A summary of the status of the options at September 30, 2017, September 30, 2017 Shares Weighted Average Average Remaining Weighted Average Outstanding at beginning of period 868,000 $ 1.10 3.41 $ - Granted - - - - Exercised - - - - Forfeited (175,000 ) 0.75 - - Expired (238,000 ) 1.90 - - Outstanding at end of period 455,000 $ 0.82 4.40 $ - Vested and expected to vest 455,000 $ 0.82 4.40 $ - Exercisable end of period 238,333 $ 0.89 5.79 $ - At September 30, 2017, 216,667 $0.74 $0.46, $18,804, 0.5 The total intrinsic value of options at September 30, 2017 $0. September 30, 2017 (

Note 15 - Significant Customers

Note 15 - Significant Customers / Concentration	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 15 - SIGNIFICANT CUSTOMERS / CONCENTRATION For the nine September 30, 2017, four 13%, 12%, 9% 5%, 39% For the nine September 30, 2016, two 30% 19%, 49% The Company sells products throughout the world. Sales by geographical region are as follows for the three nine September 30, 2017 2016: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2017 2016 2017 2016 United States and Canada $ 271,434 $ 204,134 $ 835,602 $ 554,678 Australia 215,713 43,883 502,895 266,625 South America - - - 81,480 Asia 253,460 427,511 1,379,607 649,295 Europe 1,715,877 3,013,983 5,632,654 9,786,739 $ 2,456,484 $ 3,689,511 $ 8,350,758 $ 11,338,817 The Company ’s sales by product line are as follows for the three nine September 30, 2017 2016: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2017 2016 2017 2016 Ceramic diesel particulate $ 1,519,920 $ 1,749,925 $ 5,677,005 $ 4,318,202 Liquid filters and systems 933,182 1,759,285 2,550,144 6,745,397 Kiln furniture 3,382 180,301 123,609 275,218 $ 2,456,484 $ 3,689,511 $ 8,350,758 $ 11,338,817

Note 16 - Subsequent Events

Note 16 - Subsequent Events	9 Months Ended
	Sep. 30, 2017
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 16 – SUBSEQUENT EVENTS On November 14, 2017, effected a private placement of 1,617,503 shares of preferred stock ( 1 4 6,470,012 ordinary shares of its common stock at a per share price of $1.20 $1,941,203.60 . Immediately prior to the closing of the private placement, Parent had 44,229,264 1,617,503 shares of preferred stock in the private placement, or 14.63 % equivalent shares of the total shares of common stock issued and outstanding immediately prior to effecting the private placement, Parent has 1,617,503 preferred shares and 44,229,264 506 no Except as set forth above, the Company's management reviewed material events through November 14, 2017 no

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Business and Basis of Presentation The consolidated financial statements include the accounts of LiqTech International, Inc. (“Parent”) and its subsidiaries. The terms "Company", “us", "we" and "our" as used in this report refer to Parent and its subsidiaries, which are set forth below. The Company engages in the development, design, production, marketing and sale of automated filtering systems, liquid filters, diesel particulate air filters and kiln furniture in United States, Canada, Europe, Asia and South America. Set forth below is a description of Parent and each of its subsidiaries: LiqTech International, Inc., a Nevada corporation (Parent) organized in July 2004, LiqTech USA, a Delaware corporation and a wholly owned subsidiary of Parent formed in May 2011. LiqTech International AS, a Danish corporation, incorporated on January 15, 2000 ( 100% LiqTech NA, Inc. (“LiqTech NA”), incorporated in Delaware on July 1, 2005, 100% LiqTech Germany (“LiqTech Germany”) a 100% December 9, 2011, no 2017. LiqTech PTE Ltd. (“LiqTech Sing”) a 95% January 19, 2012, no 2017. LiqTech Systems A/S ("LiqTech Systems"), a Danish corporation (formerly Provital Solutions A/S) was incorporated on September 1, 2009 July 31, 2014.
Consolidation, Policy [Policy Text Block]	Consolidation -- Functional Currency / Foreign Currency Translation -- The functional currency of LiqTech International, Inc., LiqTech USA, Inc. and LiqTech NA is the U.S. Dollar. The Functional Currency of LiqTech Int. DK and LiqTech Systems is the Danish Krone (“DKK”), the functional currency of LiqTech Germany is the Euro and the functional currency of LiqTech Singapore is the Singapore Dollar. The Company’s reporting currency is U.S. Dollar for the purpose of these financial statements. The foreign subsidiaries balance sheet accounts are translated into U.S. Dollars at the period-end exchange rates and all revenue and expenses are translated into U.S. Dollars at the average exchange rates prevailing during the three nine September 30, 2017 2016.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash, Cash Equivalents and Restricted Cash -- The Company considers all highly liquid debt instruments purchased with a maturity of three no September 30, 2017 December 31, 2016.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Accounts Receivable -- Accounts receivables consist of trade receivables arising in the normal course of business. The Company establishes an allowance for doubtful accounts, which reflects the Company’s best estimate of probable losses inherent in the accounts receivable balance. The Company determines the allowance based on known troubled accounts, historical experience, and other currently available evidence. The roll forward of the allowance for doubtful accounts for the nine September 30, 2017 December 31, 2016 2017 2016 Allowance for doubtful accounts at the beginning of the period $ 2,128,452 $ 1,087,871 Bad debt expense (59,409 ) 1,437,949 Amount of receivables written off (31,609 ) (252,792 ) Effect of currency translation 252,482 (144,576 ) Allowance for doubtful accounts at the end of the period $ 2,289,916 $ 2,128,452
Inventory, Policy [Policy Text Block]	Inventory -- Inventory is carried at the lower of cost or market, as determined on the first first
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment -- Property and equipment are stated at cost. Expenditures for major renewals and betterments that extend the useful lives of property and equipment are capitalized, upon being placed in service. Expenditures for maintenance and repairs are charged to expense as incurred. Depreciation is computed for financial statement purposes on a straight-line basis over the estimated useful lives of the assets which range from three ten 4
Investment, Policy [Policy Text Block]	Long-Term Investments -- Investments in non-consolidated companies are included in long-term investments in the consolidated balance sheet and are accounted for under the cost method and equity method. For these non-quoted investments, we regularly review the assumptions underlying the operating performance and cash flow forecasts based on information requested from these privately held companies. Generally, this information may may not may
Goodwill and Intangible Assets, Policy [Policy Text Block]	Intangible Assets -- Definite life intangible assets include patents. The Company accounts for definite life intangible assets in accordance with Financial Accounting Standards Board, (“FASB”) Accounting Standards Codification, (“ASC”) Topic 350, two ten
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill -- Goodwill is evaluated for impairment annually, and whenever events or changes in circumstances indicate the carrying value of goodwill may not may not
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition and Sales Incentives -- The Company accounts for revenue recognition in accordance with the Securities and Exchange Commission Staff Accounting Bulletin No. 101, 101 605 The Company has received long-term contracts for the installation of various water filtrations systems and grants from government entities for development and use of silicon carbide membranes in various water filtration and treatment applications. Revenues from long-term contracts and grants are recognized on the percentage-of-completion method, measured by the percentage of project costs incurred to date to estimated total project costs for each long-term contract or grant multiplied by the long-term contract or grant income on a project-by-project basis. This method is used because management considers costs incurred to be the best available measure of progress on contracts in process. Project costs of the long-term contracts and grants include all direct material and labor costs and those indirect costs related to the project. Project costs are capitalized and accreted into cost of sales based on the percentage of the project completed. Should a loss be estimated on an incomplete project it would be recorded in the period in which such a loss is determined. Changes in estimated profitability of a project are recognized in the period in which the revisions are determined. The aggregate of costs incurred and income recognized on incomplete projects are recorded as costs in excess of billings and are shown as a current asset. The aggregate of billings in excess of related costs incurred and income recognized on projects is shown as a current liability. In Denmark, Value Added Tax (“VAT”) of 25% not
Advertising Costs, Policy [Policy Text Block]	Advertising Cost -- Cost incurred in connection with advertising of the Company’s products is expensed as incurred. Such costs amounted to $9,270 $21,307 nine September 30, 2017 2016,
Research, Development, and Computer Software, Policy [Policy Text Block]	Research and Development Cost -- The Company expenses research and development costs for the development of new products and systems as incurred. Included in operating expense for the nine September 30, 2017 2016 $375,026 $476,734,
Income Tax, Policy [Policy Text Block]	Income Taxes -- The Company accounts for income taxes in accordance with FASB ASC Topic 740
Earnings Per Share, Policy [Policy Text Block]	Income (Loss) Per Share -- The Company calculates earnings (loss) per share in accordance with FASB ASC 260 not
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock Options and Awards -- The Company has granted stock options and awards to certain key employees and directors. See Note 14. 718, $150,013 $377,140 $26,775 $18,445 nine September 30, 2017 2016,
Fair Value Measurement, Policy [Policy Text Block]	Fair Value of Financial Instruments --The Company accounts for fair value measurements for financial assets and financial liabilities in accordance with FASB ASC Topic 820. three ● Level 1. liabilities; ● Level 2. ● Level 3. no reporting entity to develop its own assumptions. Unless otherwise disclosed, the fair value of the Company ’s financial instruments including cash, accounts receivable, prepaid expenses, investments, accounts payable, accrued expenses, capital lease obligations and notes payable approximates their recorded values due to their short-term maturities.
Use of Estimates, Policy [Policy Text Block]	Accounting Estimates -- The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets allowance for doubtful accounts receivable, cost in excess of billings, reserve for obsolete inventory, depreciation and impairment of property plant and equipment and impairment of goodwill and liabilities billings in excess of cost commitment and contingencies, the disclosures of contingent assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. Actual results could differ from those estimated.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements -- In May 2014, July 9 2015, one first 2018 not In February 2016, one first 2019. not Other recent accounting pronouncements issued by the FASB did not not ’s present or future financial statements.

Note 1 - Summary of Significa24

Note 1 - Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Allowance for Credit Losses on Financing Receivables [Table Text Block]	2017 2016 Allowance for doubtful accounts at the beginning of the period $ 2,128,452 $ 1,087,871 Bad debt expense (59,409 ) 1,437,949 Amount of receivables written off (31,609 ) (252,792 ) Effect of currency translation 252,482 (144,576 ) Allowance for doubtful accounts at the end of the period $ 2,289,916 $ 2,128,452

Note 3 - Inventory (Tables)

Note 3 - Inventory (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Inventory, Current [Table Text Block]	2017 2016 Furnace parts and supplies $ 375,529 $ 336,799 Raw materials 1, 218,256 1,216,098 Work in process 2,592,894 2,499,242 Finished goods and filtration systems 1,934,569 2,544,080 Reserve for obsolescence (1, 310,751 ) (1,421,345 ) Net Inventory $ 4,810,497 $ 5,174,874

Note 4 - Property and Equipme26

Note 4 - Property and Equipment (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Property, Plant and Equipment [Table Text Block]	Useful Life 2017 2016 Production equipment 3 - 10 $ 10,031,780 $ 10,370,462 Lab equipment 3 - 10 85,766 76,658 Computer equipment 3 - 5 199,184 185,652 Vehicles 3 - 5 74,164 39,090 Furniture and fixture 5 104,431 146,453 Leasehold improvements 10 1,063,722 955,563 11,559,047 11,773,878 Less Accumulated Depreciation (9,435,618 ) (9,140,320 ) Net Property and Equipment $ 2,123,429 $ 2,633,558

Note 5 - Investments at Costs (

Note 5 - Investments at Costs (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	As of September 30, 2017 Level 1 Level 2 Level 3 Investments - - 5,909 Total - - 5,909 As of December 31, 2016 Level 1 Level 2 Level 3 Investments - - 5,282 Total - - 5,282

Note 6 - Definite-life Intang28

Note 6 - Definite-life Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year ending December 31, Amortization Expenses 2017 755 2018 2,540 2019 668 Thereafter - $ 3,963

Note 8 - Notes Payable (Tables)

Note 8 - Notes Payable (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Maturities of Long-term Debt [Table Text Block]	Year ending December 31, Payments 2017 $ 3,947 2018 16,234 2019 16,897 2020 11,504 Thereafter - $ 48,582 Long-term notes payable, less current portion $ 32,521 Current portion of notes payable $ 16,061

Note 10 - Leases (Tables)

Note 10 - Leases (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Year ending December 31, Lease Payments 2017 162,739 2018 467,758 2019 179,094 2020 182,676 2021 30,546 Thereafter - Total Minimum Lease Payments $ 1,022,813
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	Year ending December 31, Lease Payments 2017 3,766 2018 26,538 Thereafter - Total minimum lease payments 30,304 Less amount representing interest (1,442 ) Present value of minimum lease payments 28,862 Less Current Portion (7,808 ) $ 21,054

Note 12 - Income Taxes (Tables)

Note 12 - Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2017 2016 Vacation accrual $ 5,450 $ 5,450 Allowance for doubtful accounts 1,202 1,202 Reserve for obsolete inventory 213,745 200,118 Business tax credit carryover 30,935 30,935 Deferred Compensation 50,512 8,500 Net operating loss carryover 5,838,958 4,906,974 Excess of book over tax depreciation (287,072 ) (296,227 ) Valuation allowance (5,853,730 ) (4,856,952 ) Long term deferred tax asset $ - $ -
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2017 2016 Computed tax at expected statutory rate $ (1,191,730 ) $ (725,821 ) State and local income taxes, net of federal benefit - - Non-US income taxed at different rates 186,512 15,135 Valuation allowance 1,005,218 3,553,605 Other - 43,013 Income tax expense (benefit) $ - $ 2,885,932
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	2017 2016 Current income tax expense: Danish $ - $ (577,892 ) Federal - - State - - Current tax (benefit) $ - $ (577,892 ) Book in excess of tax depreciation $ - $ - Deferred rent - - Business tax credit carryover - - Net operating loss carryover 440,787 (88,023 ) Valuation allowance (440,787 ) 3,551,847 Deferred compensation - - Accrued vacation - - Reserve for obsolete inventory - - Deferred tax expense (benefit) $ - $ 3,463,824 Total tax expense (benefit) $ - $ 2,885,932

Note 13 - Income (Loss) Per S32

Note 13 - Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Weighted Average Number of Shares [Table Text Block]	For the Three Months Ended September 30 For the Nine Months Ended September 30 2017 2016 2017 2016 Net Loss $ (1,479,425 ) $ (937,628 ) $ (3,505,090 ) $ (5,020,699 ) Weighted average number of common shares used in basic earnings per share 44,229,264 39,532,035 40,604,129 39,532,035 Effect of dilutive securities, stock options and warrants - - - - Weighted average number of common shares and potentially dilutive securities 44,229,264 39,532,035 40,604,129 39,532,035

Note 14 - Stockholders' Equity

Note 14 - Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]	Warrants Outstanding Warrants Exercisable Exercise Prices Number Outstanding Weighted Average Weighted Average Exercise Price Number Exercisable Weighted Average $ 0.81 100,000 0.25 $ 0.81 100,000 $ 0.81 $ 1.00 200,000 0.25 $ 1.00 200,000 $ 1.00 $ 1.65 400,000 1.83 $ 1.65 400,000 $ 1.65 Total 700,000 1.15 $ 1.34 700,000 $ 1.34
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	LiqTech International, Inc. Expected term (in years) 10 Volatility 76.87 % Risk free interest rate 2.24 % Dividend yield 0 %
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Options Outstanding Options Exercisable Exercise Prices Number Outstanding Weighted Average Life (years) Weighted Average Number Exercisable Weighted Average $ 0.74 325,000 2.87 $ 0.74 108,333 $ 0.74 $ 1.01 130,000 8.22 $ 1.01 130,000 $ 1.01 Total 455,000 4.40 $ 0.82 238,333 $ 0.89
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]	September 30, 2017 Shares Weighted Average Average Remaining Weighted Average Outstanding at beginning of period 868,000 $ 1.10 3.41 $ - Granted - - - - Exercised - - - - Forfeited (175,000 ) 0.75 - - Expired (238,000 ) 1.90 - - Outstanding at end of period 455,000 $ 0.82 4.40 $ - Vested and expected to vest 455,000 $ 0.82 4.40 $ - Exercisable end of period 238,333 $ 0.89 5.79 $ -

Note 15 - Significant Custome34

Note 15 - Significant Customers / Concentration (Tables)	9 Months Ended
	Sep. 30, 2017
Notes Tables
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	For the Three Months For the Nine Months Ended September 30, Ended September 30, 2017 2016 2017 2016 United States and Canada $ 271,434 $ 204,134 $ 835,602 $ 554,678 Australia 215,713 43,883 502,895 266,625 South America - - - 81,480 Asia 253,460 427,511 1,379,607 649,295 Europe 1,715,877 3,013,983 5,632,654 9,786,739 $ 2,456,484 $ 3,689,511 $ 8,350,758 $ 11,338,817
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	For the Three Months For the Nine Months Ended September 30, Ended September 30, 2017 2016 2017 2016 Ceramic diesel particulate $ 1,519,920 $ 1,749,925 $ 5,677,005 $ 4,318,202 Liquid filters and systems 933,182 1,759,285 2,550,144 6,745,397 Kiln furniture 3,382 180,301 123,609 275,218 $ 2,456,484 $ 3,689,511 $ 8,350,758 $ 11,338,817

Note 1 - Summary of Significa35

Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Cash, Uninsured Amount	$ 0		$ 0		$ 0
Advertising Expense			9,270	$ 21,307
Research and Development Expense	121,680	$ 124,165	375,026	476,734
Allocated Share-based Compensation Expense	$ 24,055	$ 104,416	150,013	377,140
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense			$ 26,775	$ 18,445
DENMARK
Value Added Tax Of Invoice, Percentage			25.00%
Minimum [Member]
Property, Plant and Equipment, Useful Life			3 years
Finite-Lived Intangible Asset, Useful Life			2 years
Maximum [Member]
Property, Plant and Equipment, Useful Life			10 years
Finite-Lived Intangible Asset, Useful Life			10 years
LiqTech USA [Member] | LiqTech International DK [Member]
Percentage of Subsidiary Owned	100.00%		100.00%
LiqTech USA [Member] | LiqTech NA [Member]
Percentage of Subsidiary Owned	100.00%		100.00%
LiqTech International DK [Member] | LiqTech Germany [Member]
Percentage of Subsidiary Owned	100.00%		100.00%
LiqTech International DK [Member] | LiqTech PTE [Member]
Percentage of Subsidiary Owned	95.00%		95.00%

Note 1 - Summary of Significa36

Note 1 - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Allowance for doubtful accounts at the beginning of the period	$ 2,128,452	$ 1,087,871	$ 1,087,871
Bad debt expense	(59,409)	$ 23,852	1,437,949
Amount of receivables written off	(31,609)		(252,792)
Effect of currency translation	252,482		(144,576)
Allowance for doubtful accounts at the end of the period	$ 2,289,916		$ 2,128,452

Note 3 - Inventory - Summary of

Note 3 - Inventory - Summary of Inventory (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Furnace parts and supplies	$ 375,529	$ 336,799
Raw materials	1,218,256	1,216,098
Work in process	2,592,894	2,499,242
Finished goods and filtration systems	1,934,569	2,544,080
Reserve for obsolescence	(1,310,751)	(1,421,345)
Net Inventory	$ 4,810,497	$ 5,174,874

Note 4 - Property and Equipme38

Note 4 - Property and Equipment (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Depreciation	$ 731,312	$ 992,418

Note 4 - Property and Equipme39

Note 4 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Property and equipment, gross	$ 11,559,047	$ 11,773,878
Less Accumulated Depreciation	(9,435,618)	(9,140,320)
Net Property and Equipment	2,123,429	2,633,558
Production Equipment [Member]
Property and equipment, gross	10,031,780	10,370,462
Lab Equipment [Member]
Property and equipment, gross	85,766	76,658
Computer Equipment [Member]
Property and equipment, gross	199,184	185,652
Vehicles [Member]
Property and equipment, gross	$ 74,164	39,090
Furniture and Fixtures [Member]
Useful Life (Year)	5 years
Property and equipment, gross	$ 104,431	146,453
Leasehold Improvements [Member]
Useful Life (Year)	10 years
Property and equipment, gross	$ 1,063,722	$ 955,563
Minimum [Member]
Useful Life (Year)	3 years
Minimum [Member] | Production Equipment [Member]
Useful Life (Year)	3 years
Minimum [Member] | Lab Equipment [Member]
Useful Life (Year)	3 years
Minimum [Member] | Computer Equipment [Member]
Useful Life (Year)	3 years
Minimum [Member] | Vehicles [Member]
Useful Life (Year)	3 years
Maximum [Member]
Useful Life (Year)	10 years
Maximum [Member] | Production Equipment [Member]
Useful Life (Year)	10 years
Maximum [Member] | Lab Equipment [Member]
Useful Life (Year)	10 years
Maximum [Member] | Computer Equipment [Member]
Useful Life (Year)	5 years
Maximum [Member] | Vehicles [Member]
Useful Life (Year)	5 years

Note 5 - Investments at Costs40

Note 5 - Investments at Costs (Details Textual) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Other Long-term Investments	$ 5,909	$ 5,282

Note 5 - Investments at Costs -

Note 5 - Investments at Costs - Financial Assets and Liabilities (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Inputs, Level 1 [Member]
Investments
Total
Fair Value, Inputs, Level 2 [Member]
Investments
Total
Fair Value, Inputs, Level 3 [Member]
Investments	5,909	5,282
Total	$ 5,909	$ 5,282

Note 6 - Definite-life Intang42

Note 6 - Definite-life Intangible Assets (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Intangible Assets, Net (Excluding Goodwill)	$ 3,963		$ 5,614
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Patents [Member]
Amortization of Intangible Assets	$ 1,651	$ 3,269
Patents [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	2 years
Patents [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years

Note 6 - Definite-life Intang43

Note 6 - Definite-life Intangible Assets - Expected Future Amortization Expense (Details)	Sep. 30, 2017USD ($)
2,017	$ 755
2,018	2,540
2,019	668
	$ 3,963

Note 7 - Goodwill (Details Text

Note 7 - Goodwill (Details Textual)	12 Months Ended
	Dec. 31, 2016USD ($)
Goodwill, Impairment Loss	$ 7,343,208

Note 8 - Notes Payable (Details

Note 8 - Notes Payable (Details Textual) - Notes Payable, Other Payables [Member] - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument, Interest Rate, Stated Percentage	4.02%
Long-term Debt	$ 48,582	$ 54,929
Debt Instrument, Periodic Payment	$ 1,477

Note 8 - Notes Payable - Future

Note 8 - Notes Payable - Future Maturities of Long-term Debt (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Long-term notes payable, less current portion	$ 32,521	$ 39,895
Current portion of notes payable	16,061	15,034
Notes Payable, Other Payables [Member]
2,017	3,947
2,018	16,234
2,019	16,897
2,020	11,504
Thereafter
	$ 48,582	$ 54,929

Note 9 - Lines of Credit (Detai

Note 9 - Lines of Credit (Details Textual) - Sep. 30, 2017	USD ($)	DKK
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000	DKK 94,620
Guarantor Obligations, Current Carrying Value	$ 15,000	DKK 94,620

Note 10 - Leases (Details Textu

Note 10 - Leases (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Operating Leases, Rent Expense	$ 481,001	$ 559,755
Capital Leased Assets, Gross	1,267,773		$ 1,240,358
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	1,230,832		$ 1,126,550
Depreciation	731,312	992,418
Interest Expense, Lessee, Assets under Capital Lease	6,216	13,770
Assets Held under Capital Leases [Member]
Depreciation	39,445	$ 103,219
Capital Lease Obligations [Member] | Capital Lease 1 [Member]
Debt Instrument, Periodic Payment	661
Capital Lease Obligations [Member] | Capital Lease 2 [Member]
Debt Instrument, Periodic Payment	$ 595

Note 10 - Leases - Future Minim

Note 10 - Leases - Future Minimum Lease Payments for Non-cancelable Operating Leases (Details)	Sep. 30, 2017USD ($)
2,017	$ 162,739
2,018	467,758
2,019	179,094
2,020	182,676
2,021	30,546
Thereafter
Total Minimum Lease Payments	$ 1,022,813

Note 10 - Leases - Future Min50

Note 10 - Leases - Future Minimum Capital Lease Payments (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
2,017	$ 3,766
2,018	26,538
Thereafter	0
Total minimum lease payments	30,304
Less amount representing interest	(1,442)
Present value of minimum lease payments	28,862
Less Current Portion	(7,808)	$ (45,883)
	$ 21,054	$ 93,942

Note 11 - Agreements and Comm51

Note 11 - Agreements and Commitments (Details Textual)	Sep. 09, 2014EUR (€)	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017DKK
Defined Contribution Plan, Cost | $		$ 8,636	$ 9,291
Line of Credit Facility, Maximum Borrowing Capacity		15,000		DKK 94,620
Guarantor Obligations, Current Carrying Value		$ 15,000		DKK 94,620
Chief Executive Officer [Member] | LiqTech Italy [Member]
Equity Method Investment, Ownership Percentage	60.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	40.00%
Loss Contingency, Damages Sought, Value | €	€ 750,000

Note 12 - Income Taxes (Details

Note 12 - Income Taxes (Details Textual) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 10,857,383
LiqTech International Inc and LiqTech NA [Member]
Deferred Tax Assets, Valuation Allowance	3,491,779	$ 3,542,000
LiqTech International AS and LiqTech Systems AS [Member]
Deferred Tax Assets, Valuation Allowance	2,116,505	1,095,000
LiqTech Germany [Member]
Deferred Tax Assets, Valuation Allowance	137,000	122,000
LiqTech Singapore [Member]
Deferred Tax Assets, Valuation Allowance	108,000	$ 97,000
Danish Ministry of Taxation [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	8,645,417
Federal Ministry of Finance, Germany [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	491,212
Inland Revenue, Singapore (IRAS) [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 637,307

Note 12 - Income Taxes - Deferr

Note 12 - Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Vacation accrual	$ 5,450	$ 5,450
Allowance for doubtful accounts	1,202	1,202
Reserve for obsolete inventory	213,745	200,118
Business tax credit carryover	30,935	30,935
Deferred Compensation	50,512	8,500
Net operating loss carryover	5,838,958	4,906,974
Excess of book over tax depreciation	(287,072)	(296,227)
Valuation allowance	(5,853,730)	(4,856,952)
Long term deferred tax asset

Note 12 - Income Taxes - Reconc

Note 12 - Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Computed tax at expected statutory rate			$ (1,191,730)	$ (725,821)
State and local income taxes, net of federal benefit
Non-US income taxed at different rates			186,512	15,135
Valuation allowance			1,005,218	3,553,605
Other				43,013
Income tax expense (benefit)		$ 17,646		$ 2,885,932

Note 12 - Income Taxes - Compon

Note 12 - Income Taxes - Components of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Federal
State
Current tax (benefit)				(577,892)
Book in excess of tax depreciation
Deferred rent
Business tax credit carryover
Net operating loss carryover			440,787	(88,023)
Valuation allowance			(440,787)	3,551,847
Deferred compensation
Accrued vacation
Reserve for obsolete inventory
Deferred tax expense (benefit)				3,463,824
Income tax expense (benefit)		$ 17,646		2,885,932
Danish Ministry of Taxation [Member]
Danish				$ (577,892)

Note 13 - Income (Loss) Per S56

Note 13 - Income (Loss) Per Share (Details Textual) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	455,000	1,046,000	868,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 0.82		$ 1.10
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	700,000	7,325,575
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 0.74	$ 0.74
Class of Warrant or Right, Exercise Price of Warrants or Rights	0.81	0.81
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	1.01	1.90
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.65	$ 4.06

Note 13 - Income (Loss) Per S57

Note 13 - Income (Loss) Per Share - Amounts Used in Computing Earnings Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Loss	$ (1,479,425)	$ (937,628)	$ (3,505,090)	$ (5,020,699)
Weighted average number of common shares used in basic earnings per share (in shares)	44,229,264	39,532,035	40,604,129	39,532,035
Effect of dilutive securities, stock options and warrants (in shares)	0
Weighted average number of common shares and potentially dilutive securities (in shares)	44,229,264	39,532,035	40,604,129	39,532,035

Note 14 - Stockholders' Equit58

Note 14 - Stockholders' Equity (Details Textual) - USD ($)	May 19, 2017	Jan. 02, 2017	Jan. 02, 2016	Apr. 13, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Feb. 15, 2016
Common Stock, Shares Authorized					100,000,000		100,000,000		100,000,000
Common Stock, Par or Stated Value Per Share					$ 0.001		$ 0.001		$ 0.001
Common Stock, Shares, Issued					44,229,264		44,229,264		36,835,514
Canceled Common Shares Held in Escrow in Connection with an Acquisition, Shares									2,696,521
Proceeds from Issuance of Common Stock	$ 1,825,000						$ 1,825,000
Allocated Share-based Compensation Expense					$ 24,055	$ 104,416	$ 150,013	$ 377,140
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number					455,000	1,046,000	455,000	1,046,000	868,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options					$ 18,804		$ 18,804
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares					216,667		216,667
Share Based Compensation Arrangements by Share Based Payment Award Options, Nonvested Weighted Average Exercise Price							$ 0.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value					$ 0.46		$ 0.46
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value					$ 0		$ 0
Common Stock, Shares, Outstanding					44,229,264		44,229,264		36,835,514
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
The 2011 Stock Options Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number					455,000		455,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options					$ 28,206		$ 28,206
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							455,000
LCL Finance Limited [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights										100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights										$ 0.81
Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period							0
Allocated Share-based Compensation Expense							$ 13,225
Private Placement [Member]
Stock Issued During Period, Shares, New Issues	7,300,000
Share Price	$ 0.25
Employee Stock Option [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							182 days
Employee Stock Option [Member] | The 2011 Stock Options Plan [Member]
Allocated Share-based Compensation Expense							$ 58,038	$ 272,665
Director [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross		93,750	27,253	100,000
Stock Issued During Period, Value, Restricted Stock Award, Gross		$ 60,000	$ 20,167	$ 75,000
Director [Member] | Restricted Stock [Member]
Allocated Share-based Compensation Expense							$ 78,750	$ 58,250
Director [Member] | Restricted Stock [Member] | Vesting on January 1, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				33,333
Director [Member] | Restricted Stock [Member] | Vesting On January 1, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				33,333
Director [Member] | Restricted Stock [Member] | Vesting On January 1, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				33,334

Note 14 - Stockholders' Equit59

Note 14 - Stockholders' Equity - Warrants Outstanding by Exercise Price (Details)	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Warrants outstanding (in shares) | shares	700,000
Warrants outstanding, weighted average remaining contractual life (Year)	1 year 54 days
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 1.34
Warrants exercisable (in shares) | shares	700,000
Warrants exercisable, weighted average exercise price (in dollars per share)	$ 1.34
Warrant 1 [Member]
Exercise prices of warrants (in dollars per share)	$ 0.81
Warrants outstanding (in shares) | shares	100,000
Warrants outstanding, weighted average remaining contractual life (Year)	91 days
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 0.81
Warrants exercisable (in shares) | shares	100,000
Warrants exercisable, weighted average exercise price (in dollars per share)	$ 0.81
Warrant 2 [Member]
Exercise prices of warrants (in dollars per share)	$ 1
Warrants outstanding (in shares) | shares	200,000
Warrants outstanding, weighted average remaining contractual life (Year)	91 days
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 1
Warrants exercisable (in shares) | shares	200,000
Warrants exercisable, weighted average exercise price (in dollars per share)	$ 1
Warrant 3 [Member]
Exercise prices of warrants (in dollars per share)	$ 1.65
Warrants outstanding (in shares) | shares	400,000
Warrants outstanding, weighted average remaining contractual life (Year)	1 year 302 days
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 1.65
Warrants exercisable (in shares) | shares	400,000
Warrants exercisable, weighted average exercise price (in dollars per share)	$ 1.65

Note 14 - Stockholders' Equit60

Note 14 - Stockholders' Equity - Valuation Assumptions for Stock Options (Details) - Employee Stock Option [Member]	9 Months Ended
	Sep. 30, 2017
Expected term (Year)	10 years
Volatility	76.87%
Risk free interest rate	2.24%
Dividend yield	0.00%

Note 14 - Stockholders' Equit61

Note 14 - Stockholders' Equity - Options Outstanding by Exercise Price (Details)	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Options outstanding (in shares) | shares	455,000
Options outstanding, weighted average remaining contractual life (Year)	4 years 146 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 0.82
Options exercisable (in shares) | shares	238,333
Options exercisable, weighted average exercise price (in dollars per share)	$ 0.89
Price Range 1 [Member]
Exercise prices of options (in dollars per share)	$ 0.74
Options outstanding (in shares) | shares	325,000
Options outstanding, weighted average remaining contractual life (Year)	2 years 317 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 0.74
Options exercisable (in shares) | shares	108,333
Options exercisable, weighted average exercise price (in dollars per share)	$ 0.74
Price Range 2 [Member]
Exercise prices of options (in dollars per share)	$ 1.01
Options outstanding (in shares) | shares	130,000
Options outstanding, weighted average remaining contractual life (Year)	8 years 80 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 1.01
Options exercisable (in shares) | shares	130,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 1.01

Note 14 - Stockholders' Equit62

Note 14 - Stockholders' Equity - Status of Options and Changes During the Year (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Outstanding, shares (in shares)	868,000
Outstanding, weighted average exercise price (in dollars per share)	$ 1.10
Outstanding, average remaining life (Year)	4 years 146 days	3 years 149 days
Granted, shares (in shares)
Granted, weighted average exercise price (in dollars per share)
Exercised, shares (in shares)
Exercised, weighted average exercise price (in dollars per share)
Forfeited, shares (in shares)	(175,000)
Forfeited, weighted average exercise price (in dollars per share)	$ 0.75
Expired, shares (in shares)	(238,000)
Expired, weighted average exercise price (in dollars per share)	$ 1.90
Outstanding, shares (in shares)	455,000	868,000
Outstanding, weighted average exercise price (in dollars per share)	$ 0.82	$ 1.10
Outstanding, weighted average intrinsic value	$ 0
Vested and expected to vest, shares (in shares)	455,000
Vested and expected to vest, weighted average exercise price (in dollars per share)	$ 0.82
Vested and expected to vest, average remaining life (Year)	4 years 146 days
Vested and expected to vest, weighted average intrinsic value
Exercisable end of period, shares (in shares)	238,333
Exercisable end of period, weighted average exercise price (in dollars per share)	$ 0.89
Exercisable end of period, average remaining life (Year)	5 years 288 days
Exercisable end of period, weighted average intrinsic value

Note 15 - Significant Custome63

Note 15 - Significant Customers / Concentration (Details Textual) - Customer Concentration Risk [Member] - Sales Revenue, Net [Member]	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Number of Major Customers	4	2
Concentration Risk, Percentage	39.00%	49.00%
Major Customer 1 [Member]
Concentration Risk, Percentage	13.00%	30.00%
Major Customer 2 [Member]
Concentration Risk, Percentage	12.00%	19.00%
Major Customer 3 [Member]
Concentration Risk, Percentage	9.00%
Major Customer 4 [Member]
Concentration Risk, Percentage	5.00%

Note 15 - Significant Custome64

Note 15 - Significant Customers / Concentration - Net Sales by Geographical Region (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Sales	$ 2,456,484	$ 3,689,511	$ 8,350,758	$ 11,338,817
Reportable Geographical Components [Member] | US And Canada [Member]
Net Sales	271,434	204,134	835,602	554,678
Reportable Geographical Components [Member] | AUSTRALIA
Net Sales	215,713	43,883	502,895	266,625
Reportable Geographical Components [Member] | South America [Member]
Net Sales				81,480
Reportable Geographical Components [Member] | Asia [Member]
Net Sales	253,460	427,511	1,379,607	649,295
Reportable Geographical Components [Member] | Europe [Member]
Net Sales	$ 1,715,877	$ 3,013,983	$ 5,632,654	$ 9,786,739

Note 15 - Significant Custome65

Note 15 - Significant Customers / Concentration - Sales by Product Line (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Sales	$ 2,456,484	$ 3,689,511	$ 8,350,758	$ 11,338,817
Ceramic Diesel Particulate [Member]
Net Sales	1,519,920	1,749,925	5,677,005	4,318,202
Liquid Filters [Member]
Net Sales	933,182	1,759,285	2,550,144	6,745,397
Kiln Furniture [Member]
Net Sales	$ 3,382	$ 180,301	$ 123,609	$ 275,218

Note 16 - Subsequent Events (De

Note 16 - Subsequent Events (Details Textual) - USD ($)	Nov. 14, 2017	May 19, 2017	Sep. 30, 2017	Dec. 31, 2016
Common Stock, Shares, Issued			44,229,264	36,835,514
Common Stock, Shares, Outstanding			44,229,264	36,835,514
Percent of Shares Issued and Outstanding Prior to Private Placement			14.63%
Subsequent Event [Member]
Common Stock, Shares, Issued	44,229,264
Common Stock, Shares, Outstanding	44,229,264
Preferred Stock, Shares Issued	1,617,503
Preferred Stock, Shares Outstanding	1,617,503
Convertible Preferred Stock [Member] | Subsequent Event [Member]
Proceeds from Issuance of Private Placement	$ 1,941,203.60
Private Placement [Member]
Stock Issued During Period, Shares, New Issues		7,300,000
Private Placement [Member] | Convertible Preferred Stock [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues	1,617,503
Convertible Preferred Stock, Shares Issued upon Conversion	4
Convertible Preferred Stock, Aggregate Shares Issued upon Conversion	6,470,012
Shares Issued, Price Per Share	$ 1.20