ChillChecker Irreversible Indicator

The Chill Checker will monitor food, vaccines, medicines and many other products by identifying a temperature above the specified trigger temperature. This is excellent choice for products in storage and transit. The miniature self-adhesive Chill Checker has a 2°C accuracy. Hand activated to monitor products when needed, the Chill Checker will stain a white paper inside the plastic capsule. When the specified rating is exceeded for 5 minutes the white paper turns blue or violet.