Activation temperature points range from low refrigeration type temperatures through normal body temperatures to high temperatures that exceed the pain threshold.
Hallcrest thermochromic formulations are available as a finished ink, pigment or a liquid crystal screen ink. Colors and temperatures can be customized to your application and printing capability. Thermochromic Temperature Range: -10ºC to 69ºC (14ºF to 156ºF)
Thermochromic Pigments & Coating Brochure
Thermochromic Regulatory Information
Thermochromic Solvent Compatibility Chart
Technology Note Masterbatch