[GRAPHIC  OMITED]



Company  Contact                            Investor  Relations  Contacts
- ----------------                            -----------------------------
Michael  A. McManus, Jr.                    Lippert/Heilshorn & Associates, Inc.
President  and  CEO                         Kim  Sutton  Golodetz
Misonix,  Inc.                              (kgolodetz@lhai.com)  (212) 838-3777
(631)  694-9555                             Bruce  Voss  (bvoss@lhai.com)
www.misonix.com                             (310)  691-7100
- ---------------                             www.lhai.com
                                            ------------


              MISONIX, INC. REPORTS INCREASED REVENUES AND EARNINGS
                        FOR ITS THIRD FISCAL QUARTER 2004


FARMINGDALE, N.Y., APRIL 28, 2004 MISONIX, INC. (NASDAQ NM: MSON) today reported
financial results for the three and nine months ended March 31, 2004. Highlights
for  the  third  quarter  and  nine  months  of  fiscal  2004  include:

     -    The start of the distribution of the Sonablate 500 for Prostate Cancer
          in  Europe
     -    The  release of a report at the European Association of Urology by Dr.
          John  Rewcastle  indicating  that  88%  of  patients  treated with the
          Sonablate 500 for prostate cancer had PSA levels below 1.0 at one year
          follow  up
     -    Expansion  of  the  ultrasound  refurbishing business into three Latin
          American  countries
     -    Revenues  for  the quarter ended March 31, 2004 increased 18% from the
          prior year driven by a 33% increase in medical device product revenues
     -    Revenues  for  the nine months ended March 31, 2004 increased 18% from
          the  prior year with medical device product revenues increasing by 34%
     -    Net  income increased 59% and 187% for the three and nine months ended
          March  31,  2004,  respectively,  from the same periods in fiscal 2003
     -    Operating income increased 96% to $783,000 and 96% to $1.4 million for
          the  three  and  nine  months,  respectively,  ended March 31, 2004 as
          compared to $398,000 and $713,000 for the same periods in the previous
          fiscal  year
     -    The backlog of unfilled orders was $10.2 million, an 82% increase from
          that  of  June  30,  2003 and a 19% increase from that of December 31,
          2003



Revenues  for  the  three months ended March 31, 2004 were $10.3 million, an 18%
increase  when  compared  with  $8.7 million for the same period in fiscal 2003.
The  Company  recorded  net income for the quarter of $388,000 or $.06 per fully
diluted  share,  compared  to  net  income of $244,000 or $.04 per fully diluted
share  for  the  same  period  in  fiscal 2003.  Medical device product revenues
increased  33%  to  $6.0  million and laboratory and scientific product revenues
increased  3%  to $4.3 million.  The increase in medical device product revenues
was  attributed to a 62% increase in therapeutic medical device revenues to $3.6
million  and a 4% increase in diagnostic medical device product revenues to $2.4
million.  The increase in laboratory and scientific product revenues were mainly
attributable to a 10% increase in sales of ultrasonic laboratory products, a 14%
increase  in  sales  of  wet  scrubber  products  and  a 5% increase in sales of
ductless  fume  enclosures,  partially  offset  by  a 2% reduction in endoscopic
cleaning  and  disinfecting  unit  sales.

Revenues  for  the  nine  months ended March 31, 2004 were $28.3 million, an 18%
increase  when  compared  with $23.9 million for the same period in fiscal 2003.
The Company recorded net income for the nine months ended March 31, 2004 of $1.2
million  or  $.17  per fully diluted share, a 187% increase when compared to net
income of $409,000 or $.06 per fully diluted share for the same period in fiscal
2003.  Medical  device  product  revenues  increased  34%  to  $15.8 million and
laboratory  and  scientific product revenues increased 3% to $12.5 million.  The
increase  in medical device product revenues was attributed to a 50% increase in
therapeutic  medical  device  revenues  to  $8.9  million and an 18% increase in
diagnostic  medical device revenues to $6.9 million.  The increase in laboratory
and  scientific  product  revenues  was mainly attributable to a 18% increase in
ultrasonic  laboratory  product  sales  and a 6% increase in sales of Labcaire's
endoscopic  cleaning and disinfecting units partially offset by a 7% decrease in
ductless  fume  enclosure  sales  and  a  23%  reduction  in wet scrubber sales.

As  of  March 31, 2004, the backlog of unfilled orders was $10.2 million, an 82%
increase  when  compared with $5.6 million, as of June 30, 2003.  Medical device
product  backlog was $6.0 million, a 99% increase, and laboratory and scientific
product  backlog  was  $4.2 million, a 63% increase, respectively, from June 30,
2003.

Michael  A.  McManus,  Jr., President and Chief Executive Officer commented, "We
continue  to  be  pleased  with  our  growth in both revenues and earnings.  Our
medical  device  business  continues  to  perform  above  expectation  and  our
laboratory  and  scientific business is starting to show evidence of improvement
with  increased  revenues  and  backlog."

Mr. McManus further added, "We are very excited about distributing the Sonablate
500  for  the  treatment  of  prostate  cancer and other prostate afflictions in
Europe  and Russia.  We believe the market opportunity is substantial.  This new
sales  effort will be integrated into our present sales of the neuroaspirator in
Europe.  Our distribution network in Italy, Germany and Greece will be important
in  this  growth  and  will  be  expanded  to  other  countries.

We  are  continuing  our  development work on the use of HIFU in the ablation of
kidney  and  liver  cancer.  We  believe this will be a unique product providing
substantial  benefit  to  cancer  patients."



Mr.  McManus  continued,  "Work  on  our  product utilizing ultrasound for wound
debridement  is  being completed with clinical studies in Italy and in New York.

We  are also pleased with the Latin America relationships Sonora has established
for  the  repair  and  replacement  of ultrasonic probes.  These two initiatives
reinforce  the  recognition  of  ultrasound  technology  and  the  market  for
replacement  and  repair  as well as the fact that Misonix has the capability to
deliver  ultrasound  technology  to  state  of  the  art  medical  devices.

We  believe  that the significant growth we are showing in revenues and earnings
together  with  our new product pipelines establishes Misonix as a leader in the
application  of  ultrasound  to  medical  devices."

Regarding  guidance, the Company said it still is expecting to increase revenues
by  10%  for fiscal year 2004 and based upon strong results to date, an increase
in  diluted  earnings  per  share  to  $.24  from  $.22.

As  previously announced, the Company has scheduled a conference call to discuss
this  announcement beginning at 4:30 p.m. Eastern Time today.  To participate in
the  call,  a few minutes prior to the start time, please dial (888) 803-7638 in
the  U.S.  or  (706)  634-1218  for  international  callers.  Those  unable  to
participate  are  invited  to listen to a recording of the call and Question and
Answer  session  that  will be available from 5:30 p.m. Eastern Time, Wednesday,
April  28  through  11:59  p.m.  Eastern Time, Friday, April 30 by dialing (800)
642-1687  in  the U.S. or (706) 645-9291 for international callers, and entering
reservation  code 7075436.  Alternatively, individuals may listen to the call by
visiting  the  investor  relations  section  of  the  Company's  website  at
www.misonix.com.  To  listen  to  the  live  call,  please  go to the website 15
minutes  prior  to  its  start  to register, download, and install the necessary
audio  software.  A  replay will begin shortly after the call has ended and will
be  available  for  14  days.


Misonix  develops,  manufactures,  and/or  markets  medical,  scientific  and
industrial  ultrasonic and air pollution systems and maintains a minority equity
position  in  Focus  Surgery as its exclusive manufacturer of the Sonablate 500.

Forward  Looking Statements:  Statements in this news release looking forward in
time  are  made pursuant to the Safe Harbor Provisions of the Private Securities
Litigation  Reform  Act  of  1995.  Investors are cautioned that forward-looking
statements  involve  risks  and  uncertainties,  including  general  economic
conditions,  delays  and  risks  associated  with  the performance of contracts,
uncertainties  as  a result of research and development, potential acquisitions,
consumer  and  industry  acceptance,  litigation  and/or  court proceedings, and
regulatory risks including approval of pending and/or contemplated 510K filings.


                               (Tables to follow)





                                           MISONIX, INC.
                               Consolidated Statements of Operations
                                             Unaudited

                                                  Three Months Ended        Nine Months Ended
                                                       March 31,                March 31,
                                                  2004         2003         2004          2003
                                               ========================  =========================
                                                                          
Net sales                                      $10,346,249  $8,747,677   $28,262,256  $23,932,512

Cost of goods sold                               5,892,060   4,908,659    16,164,154   13,731,118
                                               ------------------------  -------------------------

Gross profit                                     4,454,189   3,839,018    12,098,102   10,201,394

Selling expenses                                 1,203,820   1,090,662     3,282,312    3,123,225
General and administrative expenses              1,813,594   1,814,569     5,703,640    4,966,700
Research and development expenses                  654,232     583,878     1,717,878    1,599,766
Litigation (recovery) settlement expenses                -     (48,478)            -     (201,106)
                                               ------------------------  -------------------------

Total operating expenses                         3,671,646   3,440,631    10,703,830    9,488,585
                                               ------------------------  -------------------------

Income from operations                             782,543     398,387     1,394,272      712,809

Total other income                                   2,229      53,442       760,244       73,774
                                               ------------------------  -------------------------

Income before minority interest and
income taxes                                       784,772     451,829     2,154,516      786,583


Minority interest in the net income (loss) of
consolidated subsidiaries                            7,790      29,628        35,941       (4,208)
                                               ------------------------  -------------------------

Income before income taxes                         776,982     422,201     2,118,575      790,791

Income tax expense                                 388,933     177,766       947,498      382,158
                                               ------------------------  -------------------------

Net income                                     $   388,049  $  244,435   $ 1,171,077  $   408,633
                                               ========================  =========================

Net income per share-basic                     $      0.06  $     0.04   $      0.18  $      0.06
                                               ========================  =========================

Net income per share-diluted                   $      0.06  $     0.04   $      0.17  $      0.06
                                               ========================  =========================

Weighted average common shares-basic             6,655,865   6,643,300     6,655,865    6,420,118
                                               ========================  =========================


Weighted average common shares-diluted           6,774,501   6,686,981     6,744,207    6,598,608
                                               ========================  =========================






                                         MISONIX, INC.
                                  CONSOLIDATED BALANCE SHEETS

                                                              MARCH 31, 2004    JUNE 30, 2003
                                                                Unaudited          Audited
                                                             ----------------  ---------------
                                                                         
ASSETS
- --------
Current Assets:
  Cash and cash equivalents                                  $     4,140,253   $    2,279,869
  Accounts receivable, net of allowance
       for doubtful accounts of $530,204 and
       $644,157, respectively                                      6,513,591        7,844,399
  Inventories                                                     10,975,988        8,979,472
  Deferred income taxes                                              599,130          477,580
  Prepaid expenses and other current assets                        1,238,261          983,523
                                                             ----------------  ---------------
Total current assets                                              23,467,223       20,564,843

Property, plant and equipment, net                                 3,930,592        3,574,207
Deferred income taxes                                                450,778          862,690
Goodwill                                                           4,473,713        4,473,713
Other assets                                                         348,725          319,136
                                                             ----------------  ---------------
Total assets                                                 $    32,671,031   $   29,794,589
                                                             ================  ===============

LIABILITIES AND STOCKHOLDERS' EQUITY
- -------------------------------------
Current liabilities:
  Revolving credit facilities                                        641,636          704,669
  Accounts payable                                                 4,366,485        3,563,208
  Accrued expenses and other current liabilities                   2,070,873        2,002,154
  Income tax payable                                                 399,245           47,453
  Current maturities of long-term debt and capital
       lease obligations                                             308,007          279,554
                                                             ----------------  ---------------
Total current liabilities                                          7,786,246        6,597,038

Long-term debt and capital lease obligations                       1,320,613        1,235,362

Deferred income                                                      387,479          356,076

Minority interest                                                    299,392          263,450

Stockholders' equity:
  Capital stock, $0.01 par - shares authorized 10,000,000;
      6,733,665 issued and 6,655,865 outstanding                      67,337           67,337
  Additional paid-in capital                                      22,712,511       22,712,511
  Retained earnings (deficit)                                        117,593       (1,053,484)
  Treasury stock, 77,800 shares                                     (412,424)        (412,424)
  Accumulated other comprehensive income                             392,284           28,723
                                                             ----------------  ---------------
Total stockholders' equity                                        22,877,301       21,342,663
                                                             ----------------  ---------------

Total liabilities and stockholders' equity                   $    32,671,031   $   29,794,589
                                                             ================  ===============