STERILtest GST E5

Self-Contained Biological Indicators (SCBIs) with spores of Geobacillus stearothermophilus for monitoring Steam Sterilization processes. Each SCBI unit consists of a paper disc inoculated with 10^5 Geobacillus stearothermophilus (ATCC 7953) spore and a crushable glass ampoule with a sterile culture medium with pH indicator. The carrier (disc) and medium (ampoule) are contained in a thermoplastic vial with a cap permeable to steam.