**Exhibit      31.2******

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

| I,  Stanley        J. Musial, certifythat: |
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|                                            | 1. |   I        have reviewed this Quarterly Report on Form 10-Q 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 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; |
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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 of operations 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) and 15d-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 being prepared; |
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|                                            |   | b) | Evaluated        the effectivenessof the registrant’s disclosure controls and procedures and presented inthis report our conclusions about the effectiveness of the disclosure controlsand procedures, as of the end of the period covered by this report based on suchevaluation; and |
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|                                            |   | c) | Disclosed        in this report any change in the registrant’s internal control over financial        reporting that occurred during the registrant’s most recent fiscal quarter        (the registrant’s fourth fiscal quarter in the case of an annual report)        that has materially affected, or is reasonably likely to materially affect,    the registrant’s internal control over 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 auditors and 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 control over 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, whether or not material, that involves management or other employees        who have a significantrole in the registrant’s internal control over financial reporting. |
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|   |                | /s/ Stanley    J. Musial                        |   |
|--------|---------------------|-------------------------------------------------|--------|
|   |                |                                                 |   |
|   |                | Stanley    J. Musial    Chief Financial Officer |   |
| Date:  | November    5, 2004 |                                            |   |
|   |                     |                                            |   |

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