WARMMARK ascending temperature indicators help determine if your products have gone above an acceptable temperature.

Single-use, irreversible ascending time-temperature indicator alerts users of exposure to unacceptably high temperatures.

Field activated by pulling a tab.

WarmMark time-temperature indicators provide a cost-effective tool for monitoring the temperature of your package. They are a single-use device that provide accurate, irreversible evidence of a temperature excursion that can be adhered directly to the product being monitored or located inside the packaging.

When the WarmMark is exposed to conditions above the activation temperature ±1°C; a red dye will begin migrating through the run-out window(s).

Run-out times are based on a temperature 2°C above the indicator threshold. If the temperature is greater than 2°C above the activation temperature of the device, the run-out will occur faster.


Standard MOQ is 100 pieces.

Please contact us for pricing and availability, including sample packs (of 10) to test in your application. 



  • -18°C
  • 0°C
  • 5°C
  • 8°C
  • 10°C
  • 20°C
  • 25°C
  • 30°C
  • 37°C



  • Visual, irreversible colour change
  • Accuracy: +1°C
  • Activation Time: <30 mins
  • Shelf Life: 24 months
  • Adhesive: Pressure sensitive
  • Dimensions: 46 x 19 x 1.5mm
  • Pack of 100 indicators


SKU wm100
Brand ShockWatch

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