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ColdMark Indicators

ColdMark Recorders

ColdMark Irreversible Descending Temperature Recorders Monitor Temperature Sensitive Products in Storage or Transit

The ColdMark is encased in a cylindrical tube with a chemically activated dye that will change color from clear to violet when exposed to temperatures below the rated temperature. Once activated, the violet color creates a permanent record of exposure.


*ColdMark irreversible descending temperature indicators must be maintained at least 5°C above the response temperature and must ship  via 2 Day Air or faster and may seasonally incur an additional $6.00 charge for special insulated packaging.   

3CM Specifications
Accuracy ±1°C
Shipping Special insulated packaging required for shipping
Storage Storage temperature not to exceed 43°C/110°F and no colder than 5°C/411F above response temperature
Shelf Life 24 months from invoice date when stored according to requirements
Preconditioning Must be preconditioned prior to use, see ColdMark Instructions
Presentation Self-adhesive backing on release liner
Dimensions 3.3 x 0.8 x 0.4 in. (84 x 20 x 10mm)

3CM Descending Temperature Tag
Part Number Response Temperature
3CM-3C -3°C/26°F
3CM0C 0°C/32°F
3CM+2C 2°C/36°F
3CM+5C 5°C/41°F
3CM+10C 10°C/50°F