Pack monitoring products verify whether sterilant has penetrated to the area where the Chemical Indicator (CI) was placed within the pack. These Type 4, Type 5, or Type 6 chemical indicators (as defined by ISO 11140-1:2014) are designed to react to two or more of the critical variables required for sterilisation to occur—for steam sterilisation, the critical variables are time, temperature, and the presence of steam.
Only Type 5 Integrating Indicators measure all three critical variables and correlate with a biological indicator at three time/temperature relationships under ideal steam sterilisation conditions. It is a best practice to use a Type 4, Type 5, or Type 6 Pack Monitoring Chemical Indicator inside every pack.
An internal chemical indicator such as the 3M™ Comply™ SteriGage™ Chemical Integrator should be placed inside each package in the area, or areas, that are most difficult for sterilant to penetrate. Always read and understand manufacturers’ instructions for use (for the chemical indicator, device, and/or container).
Simple to use and easy to interpret, Comply SteriGage steam chemical integrators feature a 'moving front' style readout for straightforward accept or reject results. A version with extender is also available for fast and convenient retrieval from inner packs. This Type 5 Integrating indicator correlates to the performance of a biological indicator at three time /temperature relationships under ideal steam sterilisation conditions.