Back to Contents

**Exhibit31.2**

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

I, Anthony      J. Simonetta, certify that:

|   | 1.  |                                                                                                                                                                                                                                                                                                                                     | I have          reviewed this Quarterly Report as of and for the period ended June          30, 2005 on Form 10-Q/A of Strategic    Diagnostics Inc. (the “registrant”);                                                                                                                                                                                                                                                                              |
|--------|----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|   | 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;                                                                                                               |
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|   | 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;                                                                                                                                           |
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|   | 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          andhave:                                                                                                                                                                                             |
|   |
|   |     | 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;                                  |
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|   |     | b)                                                                                                                                                                                                                                                                                                                                       | Evaluated          the effectiveness of the registrant’s disclosure controls and          procedures and presented in this report our conclusions about the effectiveness          of the disclosure controls and procedures, as of the end of the period    covered by this report based on such evaluation; and                                                                                                                                          |
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|   |     | 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 |
|   |
|   | 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 theregistrant’s board of directors (or persons performing the equivalent functions): |
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|   |     | 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                                                                                                                                                    |
|   |     | b)                                                                                                                                                                                                                                                                                                                                       | Any          fraud, whether or not material, that involves management or other employees          who have a significant role in the registrant’s internal control    over financial reporting.                                                                                                                                                                                                                                                            |
|   |     |                                                                                                                                                                                                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                            |

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

26

----