Can chemical Indicators class 4, 5 & 6 recognize entrapped air inside complex Instruments?
Chemical Indicators with the correct stated value (temperature) and end point (time) can only recognize entrapped air if they can simulate the inside of the instrument therefore, in their current format, Chemical Indicators can only give information at the point at which they are placed within the pack. Class 4-5-6 chemical indicators are NOT Process Challenge Devices, as they cannot simulate worst case situations in validation load, nor do they have x-ray vision, so they cannot replicate a Process Challenge Device.
