Humidity Indicator Cards

These Humidity Indicator scales are designed for monitoring the humidity levels in and around museum cases, artifacts, collectibles, and other storage areas.

As humidity changes, the chemically impregnated colours change from blue (more humid) to pink (less humid). The humidity card indicates the current humidity level by reading to the lavender section (in between a pink and blue section). Specs

- 110mm x 40mm Cards
- Reads 10% - 100% RH levels
- Pack of 5 cards