THERMAX Temperature Label

 Thermax Standard Portfolio products offer irreversible temperature recording to help monitor the highest temperature reached. These are self-adhesive labels that change in color from silver to black. Options include level strips, mini strips, encapsulated indicators, level microstrips, and clock indicators.

Thermax® Irreversible Temperature Recording Strips

Product Description: A series of temperature test labels that will permanently record the highest temperature reached by the label.



  • Permanent Record of Highest Temperature Reached
  • Self-Adhesive Labels
  • Silver to Black Color Change
  • Immediate Response
  • Oil, Water and Steam Resistant
  • Inexpensive and Easy to Use
  • Product Line Temperature Range
    • 84 to 554°F / 29 to 290°C
  • Accuracy
    • Less than 100°C is +/- 1°C
    • 100°C to 154°C is +/- 1.5°C
    • Greater than 154°C is +/- 4°C

These self-adhesive labels consist of a series of temperature-sensitive elements sealed between heat-resistant substrates with transparent windows. Each element changes color distinctly as its rated temperature is exceeded.  The changes are irreversible, providing a temperature history of the surface being monitored. The labels will not de-laminate when removed for reference and can be attached to an inspection report to serve as a permanent record.

How the labels work:

The temperature-sensitive elements are phase-change indicators that use the sharply defined melting points of a series of specially purified organic chemicals to give the unique, high precision, color change effects.

Each temperature element uses a different chemical compound and is made separately by applying a coating containing the chemical to a special absorptive paper substrate. When the rated temperature is exceeded, the chemical melts and is absorbed by the substrate, causing a permanent color change. Up to ten elements can be combined together on a single label.

THERMAX Temperature Label

Instructions for Use:

Peel indicator from the release paper
Apply to any clean, grease-free surface ensuring that the indicator has adhered to the surface
A color change from silver-white/orange to black indicates that the temperature has been reached
Storage Conditions:
Products 120ºF/50ºC or below: Store in a refrigerator inside a sealed bag
Products above 120ºF/50ºC: Store at room temperature & humidity (i.e. 20ºC/68ºF & 50% relative humidity)

THERMAX Temperature Label

Thermax Irreversible Temperature Labels