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Biological Indicator

Biological Indicators are for use in monitoring all common health care steam sterilization (including 270°F "flash" ) or ethylene oxide (EO) gas sterilization processes.

Each indicator is completely self-contained, combining a disc inoculated with dual spore species (Bacillus stearothermophilus and Bacillus subtilis var. niger) and an ampule of specially formulated soybean casein digest growth medium with a pH indicator. The Verify Biological Indicator is designed to be sealed after processing, reducing the risk of contamination (and consequent false positives) or growth medium evaporation.

Reference

File:History of biological indicators.pdf

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