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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 non-reversible, 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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