ISO 11137-2:2011 specifies methods of determining the minimum dose needed to achieve a specified requirement for sterility and methods to substantiate the use of 25 kGy or 15 kGy as the sterilization dose to achieve a sterility assurance level, SAL, of 10^-6. ISO 11137-2:2011 also specifies methods of sterilization dose audit used to demonstrate the continued effectiveness of the sterilization dose.

ISO 11137-2:2011 defines product families for sterilization dose establishment and sterilization dose audit.