The story of Patrick Deschamps

We developed thermochromic Labels for a customer. The requirement is that the red (color) of the Label should turn white as from above 29° C.

It happened that we presented these labels to our customer in summer – and the temperature was about 31 ° C. Unfailingly, the red Labels turned white.

We had to prove to our customer that the Labels will turn red under normal ambient temperatures, by using ice blocks from a neighbouring Coffee shop.