DPI provides a full line of Temperature Indicating Labels, which are used to monitor temperature abuse of products that must be stored or transported at critical temperatures. Temperature indicating labels are available in "reversible" and "irrreversible" styles. Our irreversible labels are available in both descending and ascending modes.

  • Response temperatures available (ranging from -20°C to 300°C)
  • Custom sizes, temperatures, and functionality are available
  • Self-adhesive labels apply directly to a product, package, carton or master pack
  • Irreversible color change occurs once response temperature is reached or exceeded
  • Tamper-proof method of checking temperature while goods are stored or in transit
  • Accuracy +/- 1 °C


  • +/- 0.5 - 0.8 Deg C accuracy
  • Food
  • Pharmaceuticals
  • Nutritional Products
  • Diagnostic Test Kits
  • Candy (Chocolate)
  • Paint
  • Bulk Agricultural Commodities
  • ColdMark Freeze Indicating Labels
  • WarmMark Time Temperature Labels
  • Thermax Temperature Monitoring System


ColdMark is an irreversible temperature indicating label that provides an indication of temperature movement below a certain temperature threshold. Available in five models (-3°C, 0°C, 2°C, 5°C & 10°C), they utilize a chemicall y 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.

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.


Adhesive backed labels which record temperature abuse for shipping and storage.

  • Monitors temperatures from 8 to 48 hours, depending on model.
  • Red coloring indicates exposure to warmer-than-acceptable conditions
  • Available in a variety of response temperatures ranging from -18°C (0°F) to 37°C (99°F)
  • Accuracy ± 1°C
  • Dimensions: 1.81” x 0.75” x 0.06” (Length x Width x Thickness)

WarmMark Time Temp Tags are a convenient, accurate tool for monitoring temperature during shipping and storage of drug and medical products, vaccines, blood, plasma, diagnostics, gelatin capsule products, chemicals, paint, and temperature sensitive food products.

Response temperatures and run-out times (length of exposure time to a certain temperature) vary with each WarmMark model.

The red coloring indicates exposure to temperatures above the rated temperature for that tag. Color movement through the windows indicates passage of time. If the temperature cools below the threshold, the color stops moving.


The Thermax Irreversible Temperature labels are a fast, simple temperature monitoring system based on proprietary color changing technology.

  • Inexpensive and easy-to-use.
  • Immediate response.
  • Permanent record of highest temperature.
  • Oil, water, and steam resistant.
  • Accurate to ±1°C from 29-154°C (84-309° F) and 1% of the rated temperature above 154°C (309° F).
  • Temperature range 38-290°C (100-554° F).
  • Labels or strips.
  • Silver to black color change.
  • Last black event is the highest temperature achieved

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