EXHIBIT 99.1

Certification of Chief Executive Officer of Spectrum Laboratories, Inc.

In connection with the quarterly report of Spectrum Laboratories, Inc. and its
subsidiaries, SLI Acquisition Corp., Spectrum Europe B.V. and Spectrum
Chromatography (collectively, the Company) on Form 10-QSB for the quarter ended
June 29, 2002 as filed with the Securities and Exchange Commission on the date
hereof (the "Report"), Roy T. Eddleman, Chairman and Chief Executive Officer of
the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge
and belief:

1.       the Report fully complies with the requirements of Section 13(a) or
         Section 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.

Dated: August 13, 2002.

/s/ Roy T. Eddleman
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Roy T. Eddleman
Chairman and Chief Executive Officer
Spectrum Laboratories, Inc.