Browne Bio Monitors 2236AB

The Browne Biological Indicator 106 contains a stated population of bacterial spores inoculated onto filter paper and placed inside a plastic culture tube. A crushable glass ampoule contains the culture medium for release after exposure to the sterilization process. The Browne Biological Monitor for Steam process contains the spores of Geobacillus stearothermophilus and has a process chemical indicator on the label.



The Browne Biological Indicator should be incubated at 57 C for no longer than 48 hours following exposure and the results read approximately every 12 hours. If spores survive the sterilization cycle, the culture medium will turn yellow (positive). If the spores have been killed the culture medium will retain the original purple colour.

Applicable Standards:

  • ISO 11138
  • European Pharmacopoeia

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