Mesa Laboratories (MLAB) 10-Q 2009 Q3 Quarterly report

EXHIBIT 32.2

CERTIFICATION PURSUANT TO RULE 13a-14(b) AND 18 U.S.C. SECTION 1350

In connection with the Quarterly Report of Mesa Laboratories, Inc. (the “Company”) on Form 10-Q for the fiscal quarter ended December 31, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven W. Peterson, Chief Financial Officer of the Company, certify, pursuant to Rule 13a-14(b) and 18 U.S.C. § 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.

Date:	February 13, 2009	/s/Steven W. Peterson
		Steven W. Peterson
		Chief Financial Officer