3 spot color change humidity card is the current military standard, and is approved by all governmental agencies, the Department of Defense, and NATO for use in specified Method II packaging.

Complies with Mil-I-8835 and Mil STD-2073-1D Method 50
Read the card at lavender between pink and blue for the current humidity level.
Indicates Humidity Levels:30,40,50%RH< /p>

Alt Item#: 24878527694
Dimensions:2 x 3 in (51 x 76 mm)
Weight: 11 oz (312 g) /can
Shelf-Life: 2 years in unopened can, shelf-life will degrade once can is opened, replace desiccant periodically
Type: Cobalt Dicloride
Package: 125 individually sealed cards /pint can
Minimum Order: 40 cans