Exhibit 99.1

                        CERTIFICATION OF PERIODIC REPORT

I,  Michael McManus, Jr., President and Chief Executive Officer of MISONIX, INC.
(the  "Company"),  certify, pursuant to Section 906 of the Sarbanes-Oxley Act of
2002,  18  U.S.C.  Section  1350,  that:

(1)  the Quarterly Report on Form 10-Q of the Company for the three months ended
September  30,  2002  (the  "Report")  fully  complies  with the requirements of
Section  13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or
780(d));  and

(2)  the  information  contained  in the Report fairly presents, in all material
respects,  the  financial  condition  and  results of operations of the Company.

Dated: November 13, 2002

                               /s/ Michael McManus, Jr.
                               -----------------------------
                               Michael McManus, Jr.
                               President, Chief Executive Officer


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