CERTIFICATION

I, Gregory J. Melsen, certify that:

1.  I have reviewed this annual report on Form 10-K of Techne
    Corporation;

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 officers 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))
    and internal control over financial reporting (as defined in Exchange
    Act Rule 13a-15(f) and 15d-15(f)) for the registrant and have:

    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)  designed such internal control over financial reporting,
        or caused such internal control over financial reporting to be
        designed under our supervision, to provide reasonable assurance
        regarding the reliability of financial reporting and the
        preparation of financial statements for external purposes in
        accordance with generally accepted accounting principles;

    c)  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

    d)  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 reasonable likely to  materially
        affect, the registrant's internal control over financial
        reporting; and

5.  The registrant's other certifying officers 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):

    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:  August 27, 2008

/s/ Gregory J. Melsen
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Gregory J. Melsen
Chief Financial Officer