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-Q of Thermo Electron
Corporation (the "Company") for the period ended June 29, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), the
undersigned, Richard F. Syron, Chief Executive Officer of the Company, and Theo
Melas-Kyriazi, Chief Financial Officer of the Company, each hereby certifies,
pursuant to 18 U.S.C. Section 1350, 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.



Dated: August 13, 2002                         /s/ Richard F. Syron
                                               ---------------------------------
                                               Richard F. Syron
                                               Chief Executive Officer



Dated: August 13, 2002                         /s/ Theo Melas-Kyriazi
                                               ---------------------------------
                                               Theo Melas-Kyriazi
                                               Chief Financial Officer