Steris Corporation: Biological indicator (BI) used to promote growth of the G. stearothermophilus and B. atrophaeus spores was inconsistent in promoting growth throughout lot , some BIs within the lot performed as intended while others did not. When used to monitor steam and ethylene oxide sterilization cycles, the potential hazard is that the BI will show no growth indicating that the cycle was effective, even if it may not have been.

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Sources: FDA iRES · Raw API Response

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