Autoclave Thermalog S Indicators, Self Chemical Indicating, Box 250

3M Comply Thermalog Steam Chemical Integrators consist of a paper wick and steam and temperature sensitive chemical contained in a paper/film and foil laminate envelope. Steam enters the permeable topside of the device. This causes a chemical dye to melt and move along the paper wick; the distance or extent of migration depends on exposure to steam, time, and temperature.

THERMA-S
Temp (121°C for 15min) or (134°C for 5.3min)
Box of 250 indicators