THERMO LETTERHEAD] April 7, 2008

EXHIBIT 10.2

[THERMO LETTERHEAD]

April 7, 2008

Xxxxxx X. Xxxxxxx
President and Chief Executive Officer
Thermo Xxxxxx Scientific Inc.
00 Xxxxx Xxxxxx
Xxxxxxx, XX 00000

Dear Xxxxxx

Reference is hereby made to your Stock Option Agreement dated February 27, 2006, and your Stock Option Agreement dated November 9, 2006 (collectively, the “Option Agreements”). This letter confirms our agreement that, notwithstanding Section 4.1 of the Executive Retention Agreement dated as of November 21, 2002 (the “Retention Agreement”) and Section 6(d) of the Amended and Restated Employment Agreement dated as of November 21, 2002, the stock options subject to the Option Agreements shall not automatically become exercisable and shall not automatically become vested solely upon the occurrence of a Change in Control (as such term is defined in the Retention Agreement). Except as provided above, the Option Agreements and the terms of the stock options subject to the Option Agreements otherwise remain in full force and effect.

Very truly yours,

/s/ Xxxxxxx X. Xxxxxxx
Xxxxxxx X. Xxxxxxx
Chairman of the Compensation Committee
of the Board of Directors

AGREED AND ACCEPTED:

/s/ Xxxxxx X. Xxxxxxx

Xxxxxx X. Xxxxxxx

April 7, 2008