**Exhibit 31.1**

 

**CERTIFICATIONS**

 

I,  Irwin J.Gruverman, certify that:

 

1                                          I havereviewed this annual report on Form 10-K of MFIC Corporation;

 

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

 

3                                          Basedon my knowledge, the financial statements, and other financial informationincluded in this annual report, fairly present in all material respects thefinancial condition, results of operations and cash flows of the registrant asof, and for, the periods presented in this annual report;

 

4.                                       Theregistrant’s other certifying officers and I are responsible for establishingand maintaining disclosure controls and procedures (as defined in Exchange ActRules 13a-14 and 15d-14) for the registrant and we have:

 

a)    designed such disclosurecontrols and procedures to ensure that material information relating to theregistrant, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which thisannual report is being prepared;

 

b)    evaluated the effectiveness ofthe registrant’s disclosure controls and procedures as of a date within 90 daysprior to the filing date of this annual report (the Evaluation Date); and

 

c)    presented in this annualreport our conclusions about the effectiveness of the disclosure controls andprocedures based on our evaluation as of the Evaluation Date;

 

5.                                       Theregistrant’s other certifying officers and I have disclosed, based on our mostrecent evaluation, to the registrant’s auditors and the audit committee ofregistrant’s board of directors (or persons performing the equivalentfunction):

 

a)    all significant deficienciesin the design or operation of internal controls which could adversely affectthe registrant’s ability to record, process, summarize and report financialdata and have identified for the registrant’s auditors any material weaknessesin internal controls; and

 

b)    any fraud, whether or notmaterial, that involves management or other employees who have a significantrole in the registrant’s internal controls; and

 

6.                                       Theregistrant’s other certifying officers and I have indicated in this annualreport whether or not there were significant changes in internal controls or inother factors that could significantly affect internal controls subsequent tothe date of our most recent evaluation, including any corrective actions withregard to significant deficiencies and material weaknesses.

 
| Date:  April 5, 2004                              |   |
|--------------------------------------------------------|--------|
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| Chief  Executive Officer (Principal Executive Officer) |   |

 

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