EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In  connection  with  the Annual Report of MISONIX, INC. (the "Company") on
Form  10-K  for  the period ended June 30, 2002 as filed with the Securities and
Exchange  Commission  on  the date hereof (the "Report"), I, Michael A. McManus,
Jr.,  Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. ss.
1350,  as  adopted  pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

          (1)  The Report fully complies with the requirements of section 13(a)
               or 15(d) of the Securities Exchange Act of 1934; and

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

/s/  Michael  A.  McManus,  Jr.
Chief  Executive  Officer
September  27,  2002