POWER OF ATTORNEY





 The undersigned hereby constitutes and appoints Kathy Backes,

 Melodie R. Rose, Elizabeth M. Dunshee, Andrew Nick, and Lori Cobb, or

 either of them acting alone, the undersigned's true and lawful

 attorneys-in-fact and agent with full power of substitution and

 resubstitution, for the undersigned and in the undersigned's name, place

 and stead, in any and all capacities, to sign any or all Forms 3, Forms

 4 and Forms 5 relating to beneficial ownership of securities of Techne

 Corporation (the "Issuer"), to file the same, with all exhibits thereto

 and other documents in connection therewith, with the Securities and

 Exchange Commission and to deliver a copy of the same to the Issuer,

 granting unto said attorney-in-fact and agent full power and authority

 to do and perform each and every act and thing requisite and necessary

 to be done in and about the premises, as fully to all intents and

 purposes as the undersigned might or could do in person, hereby

 ratifying and confirming all said attorneys-in-fact and agent, or his

 substitute or substitutes, may lawfully do or cause to be done by virtue

 thereof.  The undersigned acknowledges that the foregoing attorney-in-

 fact, in serving in such capacity at the request of the undersigned, is

 not assuming any of the undersigned's responsibilities to comply with

 Section 16 of the Securities Exchange Act of 1934.





 This Power of Attorney shall remain in effect until such time as

 the undersigned is no longer subject to the provisions of Section 16 of

 the Securities Exchange Act of 1934 with respect to securities of the

 Issuer.





 IN WITNESS WHEREOF, the undersigned has caused this Power of

 Attorney to be executed as of this 15th day of May, 2014.







       /s/ Harold J. Wiens

       Harold J. Wiens