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ColdMark™ Descending Low Temperature Indicators

ColdMark Descending Low Temperature Indicators

The ColdMark is a temperature recorder for overnight shipping. It is a single-use indicator that provides an indication of descending low temperatures. Available in three models (-3°C, 0°C, 5°C), they utilize a chemically activated, irreversible dye color change that occurs when the monitored environment reaches a low threshold temperature (+/-1°C). ColdMarks require special thermal packaging with overnight shipping to prevent a false positive reading prior to use.

Instructions for Use

Storage: The shelf life of the Cold Mark is two years from date of manufacture. Store the

ColdMark indicator in a temperature environment no colder than 5°C above the response temperature. Preconditioning is not required.

Application: Remove the liner from the pressure-sensitive backing, and secure the ColdMark on a clean, dry surface inside the shipping container or on the product.

Interpretation of Results: The appearance of violet color in the ColdMark bulb indicates that the specified low temperature has been reached. If the bulb remains clear and colorless, the environment in the monitored area has remained above the threshold temperature.

ColdMark Specifications
Temperature Accuracy ±1°C/2°F
Shelf Life Two Years from Date of Manufacture
Dimensions 3.25” x 0.75”x 0.375” (W x H x Thickness)
Backing Pressure-Sensitive Adhesive with Peel-off Release Liner
Indicators per Case 250
Minimum Order 1 Case
Storage Room Temperature (not to exceed 43°C/110°F) or
Cool Storage (no colder than 5°C above response temperature)
Special Packaging Requirements If Shipping Indicators Prior to Application Use,
Thermal Packaging Protection Is Required to Prevent
Possible Premature Indication in Cold Conditions

IntroTech ColdMark Freeze Indicators

Product Number Description Indicators
per Case
1 Case
Price per Indicator
2 Cases
Price per Indicator
CM-3 -3°C (26°F) 250 $3.21 $2.97
CM 0 0°C (32°F) 250 $3.21 $2.97
CM 5 5°C (41°F) 250 $3.21 $2.97

IntroTech indicators are sold by the case.

Shelf life from date of manufacture: ColdMarks = 2 years.

ColdMarks require special thermal packaging with overnight shipment to prevent possible premature indication in cold conditions.

Note: prices are for U.S. domestic sales only.