STERIS Steraffirm? Bowie Dick Test Packs are pre-assembled single-use test packs designed to evaluate the performance of the air removal system of a pre-vacuum equipped sterilizer. Several versions of these test packs are available. They are calibrated to be compatible with pre-vacuum cycles operating at specific exposure temperatures or within a specified exposure temperature range (e.g., 121? C/250? F). They conform to the ISO 11140 (Type 2) standards. They are for use in Life Sciences applications only.