These reversible humidity indicator cards are color-change indicators and is reversible as required by Military Specification MIL-I-8835. As the humidity increases, the chemically impregnated spots change from a blue color , through a lavender, to a pink color (HUMID). As the humidity decreases, the spots change from a pink color , through a lavender, back to a blue color.
![3 Level - 5, 10 & 15% RH](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/i/m/img_7251.jpg)
MS051015
Excl. Tax: £45.00 Incl. Tax: £54.00
![3 Level - 5, 10 & 60% RH](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/i/m/img_7249.jpg)
cobalt dichloride free
Excl. Tax: £53.00 Incl. Tax: £63.60
![3 Level - 5, 10 & 60% RH](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/i/m/img_7248.jpg)
MS051060
Excl. Tax: £53.00 Incl. Tax: £63.60
![3 Level. 30, 40 & 50% RHb](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/3/b/3blue.jpg)
Excl. Tax: £52.00 Incl. Tax: £62.40
![4 Level - 10, 20, 30 & 40% RH](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/h/m/hm04cdf.jpg)
SUDHM04CDF - Cobalt Free
Excl. Tax: £30.00 Incl. Tax: £36.00
![6 Level. 10, 20, 30, 40, 50 & 60% RH B](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/2/b/2blue_1.jpg)
SUDAEC826004NE
Excl. Tax: £39.99 Incl. Tax: £47.99
![9 Level - 15-95%](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/6/2/6203-100cdf.jpg)
6203-100CDF - COBALT DICHLORIDE FREE
Excl. Tax: £38.00 Incl. Tax: £45.60
![BLD9430 Blue](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/b/l/bld9430b_1.jpg)
HI-1
Excl. Tax: £50.00 Incl. Tax: £60.00
![6 Level. 10, 20, 30, 40, 50 & 60% RH B](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/2/b/2blue_1_1.jpg)
SUDAEC826004NE-CF
Cobalt Free
Excl. Tax: £39.99 Incl. Tax: £47.99
![HUMIDITY INDICATOR CARD SINGLE LEVEL](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/m/s/ms26507-1s_1.jpg)
MS26507-1S - (MIL - I - 8835) 1 1/2" X 2"
Excl. Tax: £80.00 Incl. Tax: £96.00
![Large plastic humidity indicator](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/i/m/img_7257.jpg)
40, 50, 60, 70 & 80% LEVELS
Excl. Tax: £19.99 Incl. Tax: £23.99
![Large plastic humidity indicator 20%-80%](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/f/i/file_000.jpg)
20, 30, 40, 50, 60, 70 & 80% 7 LEVELS
Excl. Tax: £19.99 Incl. Tax: £23.99
![Large plastic humidity indicator 30%-50%](https://brownell.co.uk/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/f/i/file_001.jpg)
30, 40, 50, % 3 LEVELS
Excl. Tax: £19.99 Incl. Tax: £23.99