2i Biological Indicator 24H (50 Pack)

2i Biological Indicator 24H is a self-contained biological indicator (BI) for routine monitoring of steam (autoclave) sterilization. Each vial holds a defined population of Geobacillus stearothermophilus spores with growth medium; after the cycle it is crushed and incubated, and a colour change reveals whether sterilizing conditions were met. 24-hour readout. Pack of 50.