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, 2007


/s/ Gregory J. Melsen

Gregory J. Melsen
Chief Financial Officer