LOT - COLDMARK TEMPERATURE FREEZE INDICATORS & WarmMark heat indicators - USED

Description

A group of Coldmark freeze indicators and WarmMark heat indicators.
They have been pried off the sides of shipped boxes where they had been adhesived to, the indicators are still good.
If the Coldmak indicator reaches freezing, 32 Fahrenheit / 0 Celsius, or below,  the bulb will turm blue.(I tested one, see last picture.)
The WarmMark indicator reacts at 95 Fahrenheit / 35 Celsius or above.
See pictures for details.
Included in the group are 20 Coldmark indicators and 11 WarmMark indicators. And one tested Coldmark that has turned blue.
The Coldmarks measure 3 1/4" length.