**Exhibit31.2**

**Rule          13a-14(a)/15d-14(a) Certification**

| I,    Anthony J. Simonetta, certify that: |
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| 1.                                        | I have reviewed this Quarterly Report as of and for the period ended March 31, 2005 on Form 10-Q/A of Strategic Diagnostics Inc. (the “registrant”); |
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| 2.                                        | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to statea  materialfact necessary to make the statements made, in light of the circumstances underwhich such statementsweremade, not misleading with respect to the period covered by this report; |
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| 3.                                        | Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results ofoperations and cash flows of the registrant as of, and for, the periods presented in this report; |
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| 4.                                        | The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) for the registrant and have: |
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|                                      | a) | Designed    such disclosure controls and procedures, or caused such disclosure controls    and procedures to    be designed under our supervision, to ensure that material information relating    to the registrant, including its consolidated subsidiaries, is made known    to us by others within those entities, particularly during the period in    which this report is beingprepared; |
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|                                      | b) | Evaluated theeffectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controlsand procedures, as of the end of the period covered by this report based on such evaluation; and |
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|                                      | c) | Disclosed in thisreport any change in the registrant's internal control over financial reportingthat occurred during the registrant's most recent fiscal quarter (the registrant'sfourth fiscal quarter in the case of an annual report) that has materially affected,or is reasonably likely to materially affect, the registrant's internal controlover financial reporting; and |
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| 5.                                        | The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditorsand the audit committee of the registrant’s board of directors (or persons performing the equivalent function): |
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|                                      | a) | All significant      deficiencies and material weaknesses in the design or operation of internal    controlover financial    reporting which are reasonably likely to adversely affect the registrant’s    ability to record, process, summarize and report financial information; and |
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|                                      | b) | Any fraud, whetheror not material, that involves management or other employees who have a significantrole in the registrant’s internal control over financialreporting. |

 

| Date:  | March 16, 2006 | /s/    | Anthony J. Simonetta   |
|--------|----------------|--------|------------------------|
|   |           |   |                        |
|   |           |   | Anthony J. Simonetta   |
|   |           |   | Chief FinancialOfficer |

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