BT20 self-contained biological indicator

BT20 self-contained biological indicator
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Monitoring vacuum-assisted and gravity air-displacement Steam Sterilization processes at 121-135 °C.

Spores: Geobacillus stearothermophilus

Population: 105-106, includes labelling with bacterial load.

Incubation: 24 hours (maximum), 55-62 °C. Culture medium turns to yellow after incubation.

Shelf life: 2 years.

Quantity: 30 units or 100 units per box.

Designed under standards ISO 11138-1 and ISO 11138-3.