Securities and Exchange Commission
Washington, D.C. 20549
RE: STERIS Corporation
Commission File No. 0-20165
1933 Act and 1934 Act Filings

Authorized Representatives

Gentlemen:

     The above Company is the issuer of securities registered under Section 12 of the Securities
Exchange Act of 1934. The person signing below confirms, as of the date appearing opposite
his/her signature, that each of the "Authorized Representatives" named below is authorized on
his/her behalf to sign such statements (on Form 3, Form 4, Form 5, Form 144, Schedule 13G, or
otherwise) with respect to securities of the Company (the "Securities"), and to submit to the
Securities and Exchange Commission such filings (including reports, notices, and other
statements) with respect to the Securities, as are required by the Securities Act of 1933, as
amended, or the Securities Exchange Act of 1934 as amended (collectively, the "Acts"). The
person so signing also confirms the authority of each of the Authorized Representatives to do and
perform, on his/her behalf, any and all acts and things with respect to the Securities requisite or
necessary to assure compliance by the signing person with the filing requirements of the Acts.
This authority revokes all prior authorities with respect to the Securities previously executed by
the person signing below including but not limited to any such authorities filed with or given to
the Commission by the person signing below. The authority confirmed herein shall remain in
effect as to the person signing below until such time as the Commission shall receive from that
person a written communication that terminates or modifies the authority.

Authorized Representatives
 Judith A. Hunter
 Dennis P. Patton
 Ronald E. Snyder
 Michael J. Tokich
 J. Adam Zangerle

Dated:  04/25/2013					By:  /s/ Loyal W. Wilson
							Print Name:  Loyal W. Wilson