Humidity Cards

Humidity Card indicator scales provide a quick and inexpensive means of checking relative humidity levels of your storage or display area.

As humidity changes, the chemically impregnated spots change from blue (dry) to lavender (normal) to pink (humid).

The standard humidity card indicates the current humidity level by reading to the first blue (dry) section. If higher level of accuracy is required we recommend our digital thermohygrometer.

  • 110mm x 40mm Cards
  • Reads 10% - 100% RH levels
  • Pack of 5 cards
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Humidity Cards
P931-3100 931-3100
Pack Size: Pkg 5 Price: £7.95 ex VAT In Stock

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