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 Quarterly Report on Form 10-QSB of SystemOne Technologies
Inc. (the "Company") for the period ended June 30, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Paul I.
Mansur, Chief Executive Officer of the Company, and, I, Steven M. Healy,
Director of Finance and Administration of the Company, each hereby certifies,
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 results of operations of the
Company.


/s/ PAUL I. MANSUR
-----------------------------------------------
Paul I. Mansur
Chief Executive Officer
August 14, 2002



/s/ STEVEN M. HEALY
-----------------------------------------------
Steven M. Healy
Director of Finance and Administration
(Principal Financial and Accounting Officer)
August 14, 2002