CERTIFICATION

Exhibit 31.3

 I, David Unger, certify that:

1. I have reviewed this Amendment No. 1 to the annual report on Form 10-K of MFRI, Inc.; and for the year ended January 31, 2010.

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Date:           June 4, 2010

/s/ David Unger 

David Unger

Director and Chairman of the Board of Directors

and Chief Executive Officer

(Principal Executive Officer)