3M Attest 1292 Rapid Readout Biological Indicators for 121°C/250°F gravity and 132°C/270°F vacuum-assisted steam sterilizers are a dual readout biological indicator system specifically designed for rapid and reliable monitoring of steam sterilization processes when used in conjunction with the 3M™ Attest™ 290 Auto-reader or the 3M™ Attest™ Auto-reader 390. It provides results in 3 hours.