Exhibit 17.1
September 30, 2010
Anthony S. Loumidis
Corporate Secretary
GlenRose Instruments Inc.
45 First Avenue
Waltham, MA 02451
Dear Anthony:
I hereby resign from my position as a member of the Board of Directors and as a member of the Board’s Compensation Committee of GlenRose Instruments Inc. (or GlenRose), effective immediately. My resignation will permit me to devote additional time to fulfilling other business interests and responsibilities. I have no disagreements with the strategies being pursued or the perspectives of management at GlenRose and wish the company continued success.
Sincerely,
/s/ THEO MELAS-KYRIAZI
Theo Melas-Kyriazi