Knowing the correct temperature has been maintained is critical to the cold chain. The SpotSee FreezeSafe indicator provides evidence if your product has experienced unacceptably low temperatures.

FreezeSafe Instrument Specification

Dimensions: 21mm x 21mm
Indication Type: Visual, clear to Magenta
Activation Method: No pre-activation required.
Storage Conditions: Store unused product away from direct light between 15°C and 25°C / 59°F and 77°F


Temperature Threshold: 0°C / 32°F , 2°C / 36°F
Time Delay: Within 90 minutes (2°C),  Within 30 minutes (0°C)
Accuracy: ±1°C / ±2°F
Shelf Life: 1 year


  • Easy to read – Distinct color change when temperature has fallen below threshold temperature. Provides evidence if the cold chain has been maintained.
  • Easy to use – Product arrives ready to use. No pre-activation required.
  • Easy to implement – Cost effective solution that enables simple accept / reject decisions to be made.


  • Specimens
  • Food delivery
  • Pharmaceutical
  • Chemicals

Contact us for pricing.

We recommend you contact us to discuss your application so that we can assist you in choosing the correct ShockWatch indicators for you or if you wish to purchase over 250.

Hanwell Solutions Ltd are the official UK distributors of ShockWatch impact labels. Contact SpotSee if you wish to purchase this product outside of the UK: visit