Cobalt Free Humidity Indicator Cards -3 spot  5%, 10% and 60%. changes colour in contact with moisture. 125 cards per tin, Meets requirements of IPC/JEDEC J -STD-033B .

Tin needs to be kept tightly sealed. Remove -humidity indicator cards- only when ready to use and reclose can immediatly after removing the card. The 60% spot on the moisture indicator card should be blue when the can is first opened.

  £32.00 per tin .    discounts for larger quantities.