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                            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, 2010

/s/ Gregory J. Melsen


Gregory J. Melsen
Chief Financial Officer