EXHIBIT 32.1

                            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 ending June 30, 2003 as filed with the Securities and
Exchange  Commission  on  the date hereof (the "Report"), I, Michael A. McManus,
Jr.,  President and 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.

Dated: September 19, 2003

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

A signed original of this written statement required by Section 906, or other
document authenticating, acknowledging, or otherwise adopting the signature that
appears in typed form within the electronic version of this written statement
required by Section 906, has been provided to MISONIX, INC. and will be retained
by MISONIX, INC. and furnished to the Securities and Exchange Commission or its
staff upon request.