ColdMark Temperature Indicator is a single-use descending indicator designed to help shippers and consumers identify if the temperature of a package has reached below the specified threshold. ColdMark Indicator bulb turns from clear to violet when the temperature goes below the predetermined threshold.

• Delivers irreversible evidence of exposure to unacceptable temperature conditions
• Allows for easy accept/reject decisions to be made
• Assists in verifying the adequacy of the cold chain packaging
• Provides cost-effective solution for last mile monitoring