• Biological Indicators

Biological Indicators

MesaStrip® is a conventional paper strip biological indicator for monitoring steam, low temperature steam formaldehyde, ethylene oxide, dry heat, chlorine dioxide and gamma radiation industrial sterilization processes.

MesaStrip® contains bacterial spores on a filter paper carrier sealed within a convenient, peel-open glassine envelope.

To use a MesaStrip®, simply place the envelope inside a product or product package. This “inoculated package” is placed in a sterilizer and processed. Upon removal from the sterilizer, the inoculated package is sent to the microbiology laboratory for transfer of the MesaStrip®. The BI is to be aseptically cultured in soybean casein digest medium and incubated at the appropriate temperature.

  • Autoclave Validations
  • EO Sterilization
  • Steam Applications
  • Irradiation Sterilization
  • Multiple Species Available
Storage Certification
Store at room temperature.

MesaStrip® biological indicators are traceable to a recognized culture collection
and certified for population, D-value, z-value (steam) and performance.


Process Species Log
Steam G. stearothermophilus 105
Steam G. stearothermophilus 106
Ethylene Oxide and Dry Heat B. atrophaeus 106
Gamma Radiation B. pumilus 106
Chlorine Dioxide B. atrophaeus 106
Dual Species (Steam / EO and Dry Heat) G. stearothermophilus
and B. atrophaeus
105 / 106
106 / 106
Low Temp Steam Formaldehyde G. stearothermophilus 106