EXHIBIT 99.2
                                                                    ------------

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

     I, Steve Bowen, Chief Financial Officer of Sonics & Materials, Inc. (the
"Company"), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
18 U.S.C. Section 1350, that:

           (1) the Annual Report on Form 10-KSB of the Company for the fiscal
           year ended June 30, 2002 as filed with the Securities and Exchange
           Commission on 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 78o(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: September 30, 2002



                                                 /s/ Steve Bowen
                                                -----------------------------
                                                 Steve Bowen
                                                 Chief Financial Officer

This certification is made solely for the purpose of 18 U.S.C. Section 1350,
subject to the knowledge standard contained therein, and not for any other
purpose.