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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 11-K

                    ANNUAL REPORT UNDER SECTION 15 (d) OF
                   THE SECURITIES AND EXCHANGE ACT OF 1934




For the year  ended December 31, 2000           Commission file number 000-21109





                CUNO INCORPORATED SAVINGS AND RETIREMENT PLAN
                          (Full title of the plan )





                                CUNO INCORPORATED
                              400 RESEARCH PARKWAY
                           MERIDEN, CONNECTICUT 06450
  (Name and issuer of the securities held pursuant to the plan and the address
                       of its principal executive office)
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                CUNO INCORPORATED SAVINGS AND RETIREMENT PLAN
                          AUDITED FINANCIAL STATEMENTS
                           AND SUPPLEMENTAL SCHEDULES



                                                                             Page
                                                                             ----
                                                                          
Report of Independent Auditors

Statements of Assets Available for Plan Benefits                               1

Statements of Changes in Assets Available for Plan Benefits                    2

Notes to Financial Statements                                                3-6

Supplemental Schedule
      Schedule H, Line 4(i) -- Schedule of Assets Held for Investment
      Purposes at Year End                                                     7

Exhibit 23 -- Consent of Independent Auditors                                  8

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                         REPORT OF INDEPENDENT AUDITORS



Administrative Committee
CUNO Incorporated Savings and Retirement Plan


We have audited the accompanying statements of assets available for plan
benefits of the CUNO Incorporated Savings and Retirement Plan (the "Plan") as of
December 31, 2000 and 1999, and the related statements of changes in assets
available for plan benefits for the years then ended. These financial statements
are the responsibility of the Plan's management. Our responsibility is to
express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the assets available for plan benefits of the Plan at
December 31, 2000 and 1999, and the changes in its assets available for plan
benefits for the years then ended, in conformity with accounting principles
generally accepted in the United States.

Our audits were performed for the purpose of forming an opinion on the financial
statements taken as a whole. The accompanying supplemental schedule of assets
held for investment purposes at year end as of December 31, 2000 is presented
for purposes of additional analysis and is not a required part of the financial
statements but is supplementary information required by the Department of
Labor's Rules and Regulations for Reporting and Disclosure under the Employee
Retirement Income Security Act of 1974. This supplemental schedule is the
responsibility of the Plan's management. The supplemental schedule has been
subjected to the auditing procedures applied in our audits of the financial
statements and, in our opinion, is fairly stated in all material respects in
relation to the financial statements taken as a whole.


                                                /s/ Ernst & Young LLP

Hartford, Connecticut
June 22, 2001








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CUNO INCORPORATED SAVINGS AND RETIREMENT PLAN
STATEMENT OF ASSETS AVAILABLE FOR PLAN BENEFITS
DECEMBER 31, 2000 AND 1999





                                                  DECEMBER 31,
                                             2000           1999
                                             ----           ----
                                                  
Investments:
     Mutual funds                        $20,344,094     $20,908,934
     CUNO Incorporated common stock        4,548,618       3,281,257
     Participant loans receivable            970,517         760,051
                                         -----------     -----------
                                          25,863,229      24,950,242

Receivables:
     Employer's contribution                 631,920         588,862
     Participants' contributions              40,276          47,675
                                         -----------     -----------
                                             672,196         636,537
                                         -----------     -----------
       Assets available for plan
         benefits                        $26,535,425     $25,586,779
                                         ===========     ===========




See accompanying notes.


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CUNO Incorporated Savings and Retirement Plan
Statement of Changes in Assets Available for Plan Benefits
Year ended December 31, 2000 and 1999





                                                                 December 31,
                                                              2000           1999
                                                          -----------    -----------
                                                                   
Additions to net assets attributed to:
    Interest income                                       $    81,434    $    59,801
    Dividend income                                         1,068,152      1,091,091
                                                          -----------    -----------
                                                            1,149,586      1,150,892
    Contributions:
      Participants                                          1,963,458      1,924,000
      Employer                                                631,920        588,862
                                                          -----------    -----------
                                                            2,595,378      2,512,862
                                                          -----------    -----------
    Total Additions                                         3,744,964      3,663,754
                                                          -----------    -----------
Benefits paid to participants                              (1,570,498)    (1,670,680)
Net realized and unrealized (depreciation)
    appreciation in fair value of investments              (1,225,820)     3,128,205
                                                          -----------    -----------
Net increase in assets available for plan benefits            948,646      5,121,279

Assets available for plan benefits at beginning of year    25,586,779     20,465,500
                                                          -----------    -----------
Assets available for plan benefits at end of year         $26,535,425    $25,586,779
                                                          ===========    ===========


See accompanying notes.


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                                CUNO Incorporated
                           Savings and Retirement Plan

                          Notes to Financial Statements

                                December 31, 2000

NOTE 1 -- DESCRIPTION OF PLAN

The CUNO Incorporated Savings and Retirement Plan (the "Plan") consists of a
pre-tax savings program, a post-tax savings program, and an employer matching
program. The Plan was adopted as of September 10, 1996. All employees of CUNO
Incorporated (the "Company" or "Plan Sponsor" or "Employer") that have been
credited with at least 500 hours of service within a six month period following
their initial date of employment, or have completed one year of service
recognized by the Plan, are eligible to participate in the Plan. The Plan is
subject to the applicable provisions of the Employee Retirement Income Security
Act of 1974, as amended ("ERISA").

Under the pre-tax program, participants may elect to contribute up to 15 percent
of their compensation, on a tax-deferred basis, to the Plan. Under the post-tax
program, participants may elect to contribute up to an additional seven percent
of their compensation. These contributions are made with after-tax dollars and
do not receive Company matching contributions. Participants may also contribute
amounts representing distributions from other qualified defined benefit or
contribution plans. The Company makes an annual discretionary matching
contribution, in the form of Company common stock, that represents a percentage
of the participants' pre-tax contributions. The matching percentage is applied
to each participant's pre-tax contributions not exceeding 6 percent of eligible
compensation.

All investment account dollars that result from employee contributions and
related Plan earnings are immediately vested. Company matching contributions
plus actual earnings thereon vest based on years of continuous service. A
participant is 100 percent vested after five years of credited service.

Participants also become fully vested in Company matching contributions upon
attainment of their normal retirement date, or upon their death or disability.
If the participant's employment with the Company terminates for other reasons,
and the participant elects to receive distribution of his or her account, the
vested portion of his or her account is distributed to the participant and the
non-vested portion of the participant's account is used to reduce the Company
matching contribution. There were no non-vested assets attributed to terminated
employees at December 31, 2000 or 1999.

Fully-vested amounts allocated to accounts of persons who have elected to
withdraw from the Plan amounted to $2,005,809 and $1,367,812 at December 31,
2000 and 1999, respectively.

                                       -3-
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                                CUNO Incorporated
                           Savings and Retirement Plan

                  Notes to Financial Statements (continued)

NOTE 1 -- DESCRIPTION OF PLAN (CONTINUED)

The Plan provides for separate investment options in one or more funds as
directed by the participants. These options include the Merrill Lynch Retirement
Preservation Trust, Merrill Lynch Federal Securities Trust, Dreyfus Premier
Balanced Fund, Merrill Lynch Fundamental Growth Fund, Merrill Lynch S&P 500
Index Fund, Van Kampan American Value Fund, Oppenheimer International Growth
Fund, Alliance Technology Fund, Chase Vista Large Cap Equity Fund, Lord Abbett
Developing Growth Fund, and the CUNO Stock Fund. The participants may change
their investment alternatives semi-annually.

The Plan is administered by the Administrative Committee (the "Committee")
appointed by the Company's Board of Directors. Merrill Lynch Trust Company is
the Plan's trustee. The Company has the sole right to appoint the trustee, and
to terminate the Plan, subject to the provisions of ERISA. The Company pays all
significant administrative expenses.

Participants may borrow from their fund accounts up to a maximum equal to the
lesser of $50,000 or 50 percent of their account balance. Loan transactions are
treated as a transfer to/(from) the investment fund from/(to) the Participant
Loan Fund. Loan terms range from 1-5 years, except for the purchase of a primary
residence, which term may be a reasonable period of time that may exceed five
years. The loans are secured by the balance in the participant's account and
bear interest at a rate commensurate with local prevailing rates as determined
by the Plan Administrator. Principal and interest is paid ratably through
monthly payroll deductions.

Although it has not expressed any intent to do so, the Company has the right
under the Plan to discontinue its contributions at any time and to terminate the
Plan subject to the provisions of ERISA. In the event of Plan termination,
participants will become 100 percent vested in their accounts.

The foregoing description of the Plan provides only general information.
Additional information about the plan agreement, forfeitures, and distributions
from the Plan may be obtained from the Plan Document.

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                                CUNO Incorporated
                           Savings and Retirement Plan

                  Notes to Financial Statements (continued)

NOTE 2 -- SIGNIFICANT ACCOUNTING POLICIES

VALUATION OF INVESTMENTS

Investments in common stock of CUNO Incorporated are carried at the closing
market price on the last business day of the year. Participant loans receivable
are stated at realizable value which approximates fair value.

Investments in mutual funds are carried at the fair value of their underlying
net assets as determined by their respective fund managers, based primarily on
market data.

Purchases and sales of securities are recorded on a trade-date basis. Interest
income is recorded on the accrual basis. Dividends are recorded on the
ex-dividend date.

USE OF ESTIMATES

The preparation of financial statements in conformity with accounting principles
generally accepted in the United States requires the administrator to make
estimates and assumptions that affect the amounts reported in the financial
statements and accompanying notes. Actual results could differ from those
estimates.

NOTE 3 - INVESTMENTS

The following presents investments which represent 5% or more of the Plan's net
assets:



                                                                    DECEMBER 31,
                                                                 2000           1999
                                                                 ----           ----
                                                                       
Merrill Lynch Fundamental Growth Fund, 333,943 and
  303,483 shares                                              $7,420,220     $7,851,102
Dreyfus Premier Balanced Fund, 257,294 and 275,086 shares      3,753,923      4,261,083
Merrill Lynch Retirement Preservation Trust,
  2,909,205 and 3,186,664 shares                               2,909,205      3,186,664
Merrill Lynch S&P 500 Index Fund, 196,762
  and 195,573 shares                                           3,183,613      3,524,230
CUNO Stock Fund, 169,649 and 158,841 shares                    4,548,618      3,281,257





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                                CUNO Incorporated
                           Savings and Retirement Plan

                  Notes to Financial Statements (continued)


NOTE 4 -- INCOME TAX STATUS

The Internal Revenue Service has ruled that the Plan qualifies under the
applicable section of the Internal Revenue Code and is, therefore, not subject
to tax under present income tax law. Once qualified, the Plan is required to
operate in conformity with the Internal Revenue Code to maintain its
qualification. The Plan Administrator is not aware of any course of action or
series of events that have occurred that might adversely affect the Plan's
qualified status.

NOTE 5 -- TRANSACTIONS WITH PARTIES-IN-INTEREST

The statements of changes in assets available for plan benefits reflect non-cash
matching contributions from the Company consisting of shares of the Company's
common stock. Such shares are recorded based on their fair market value.


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                CUNO Incorporated Savings and Retirement Plan

 Schedule H, Line 4(i) -- Schedule of Assets Held for Investment Purposes at
                                    Year End

                                December 31, 2000




            IDENTITY OF PARTY                         DESCRIPTION OF INVESTMENT          VALUE
            -----------------                         -------------------------          -----

                                                                               
Merrill Lynch Retirement Preservation Trust           Units                          $  2,909,204
Merrill Lynch Federal Securities Trust                Units                               871,437
Dreyfus Premier Balanced Fund                         Units                             3,753,923
Merrill Lynch Fundamental Growth Fund                 Units                             7,420,221
Van Kampen American Value Fund                        Units                               559,450
Oppenheimer International Growth Fund                 Units                               925,179
Merrill Lynch S&P 500 Index Fund                      Units                             3,183,613
Alliance Technology Fund                              Units                               662,626
Lord Abbett Developing Growth Fund                    Units                                45,052
Chase Vista Large Cap Equity Fund                     Units                                13,389
CUNO Incorporated                                     Common stock                      4,548,618
Participant Notes                                     Loans receivable                    970,517
                                                                                     ------------
                                                                                     $ 25,863,229
                                                                                     ============



All of the above parties are considered parties-in-interest.

The cost column is not applicable because all investment programs are fully
participant directed.


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