Selfcontained

Self-contained biological indicators (SCBI’s) are available for monitoring the efficacy of steam and ethylene oxide sterilization processes.
SCBI’s contain bacterial spores on a paper carrier plus a sealed glass ampoule within a vented plastic vial.
The glass ampoule contains a proprietary formulation of soybean casein digest culture media with a pH indicator. The pH indicator remains purple when there is no spore growth and yellow when there is spore growth. This allows quick visual determination of sterilization failures (yellow color).