Temperature indicators are absolutely essential for many facilities that struggle with bacterial and viral pathogens, particularly when conditions must be exact. Our 180° Temp-Label Indicators feature a temperature sensitive element that produces a non-reversible white to black color change at 180° Fahrenheit. 180° Temp-Label Indicators are completely waterproof, and come with an improved backing that sticks better than other test strips, allowing you to stick them to any surface with confidence.