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Thermax® Precision irreversible temperature indicators are a simple, cost-effective temperature monitoring program based on proprietary color change technologies.

Irreversible temperature indicators provide a permanent record that an item has reached or exceeded its rated temperature. They can be used in applications where specific temperature bands are required.

The temperature labels work through a non-toxic chemical reaction and subsequent colour change (from clear to black), once the particular activation point is reached.  

The colour change is irreversible so that the strips indicate the highest temperature attained.  

The labels can be attached to almost any surface as they have a strong adhesive backing that is oil, water and steam resistant. 



  • Proof of Drying, Curing & Bonding
  • Preventative Maintenance
  • Process Validation
  • Warranty Claims



  • Packet of 25 labels
  • Irreversible (permanent record of peak temperature)
  • Precise temperature bands for improved measurement accuracy
  • Adhesive backed (Oil, water and steam resistant)
  • Distinct separation of temperature ranges for improved readability
  • Non hazardous




Size: 55 x 20 mm
Scale: °C
Pack Size: 25 labels (strips)



  • 25 to 100°C: +/-1°C
  • 104 to 150°C: +/-1.5°C
  • 154 to 200°C: +/-3°C
  • 204 to 300°C: +/-4°C


Please contact us to discuss the options for your application 


• Clear color change shows maximum temperature experienced
• Permanent record of highest temperature
• Immediate response to temperature
• Cost effective temperature monitoring solution
• Oil, water, and steam resistant

Size: 55 x 20 mm
Scale: °C
Pack Size: 25 labels (strips)


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