The challenge pack consists of multiple layers of medical index cards, some of which are die‑cut to contain the biological indicator. The stacked cards are wrapped with a sterilization wrap. Each challenge pack has a process indicator on the pack label that changes from yellow to brown or darker when exposed to steam.
For 132°C (270°F) 4 minute and 135°C (275°F) 3 minute Vacuum-Assisted Steam Sterilization. Each pack contains one 3M™ Attest™ Super Rapid Readout Biological Indicator 1492V. Includes 5 controls