Merrimac Industries 10-Q 2009 Q2 Quarterly report

EXHIBIT 32.1

CERTIFICATE PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, Mason N. Carter, Chief Executive Officer of Merrimac Industries, Inc. (the "Company"), hereby certifies, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Company's Quarterly Report on Form 10-Q for the period ended July 4, 2009, as filed with the Securities and Exchange Commission on the date hereof (the "Quarterly 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 Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Mason N. Carter

Mason N. Carter

Chief Executive Officer

August 17, 2009