Multicritical Process Variable Indicator, ISO 11140-1 Type 4
Type 4 Indicators are designed to react to two or more of the critical process variables. For steam, the critical process variables are time, temperature and moisture. True Indicating’s Product Code CSYN-14, indicates exposure to a steam process at the Stated Value (SV) of 121°C for 15 minutes or 134°C for 3.5 minutes. The Indicator will transition from Yellow to Dark; the transition color may vary depending on the load configuration, length and conditions of exposure. A color transition from Yellow to Dark and the word “NOT” being completely concealed provides indication of exposure to a steam process where two or more of the critical process variables were met for sterilization.
The backing of the strip is removable which exposes latex-free adhesive for easy application of the Indicator to packages during exposure or for record keeping purposes after exposure.