Exhibit 23.1

CONSENT OF ERNST & YOUNG LLP, INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

We consent to the reference to our firm under the caption “Experts” and to the use of our report dated August 13, 2009 in the Registration Statement (Form S-1) and related Prospectus of Mirion Technologies, Inc. for the registration of shares of its common stock.

/s/ Ernst & Young LLP

San Francisco, California
August 13, 2009