Use our humidity indicator cards to determine the humidity levels (or relative humidity, “RH”) in a contained environment. Each pack contains 10 humidity-indicator cards, and each card will read RH from 10%-60%. Simply place a single card in the area to be read and wait for the indicator dots to turn bright blue in order to determine the humidity levels in that area.
Orders will ship out from our warehouse within3 business days, excluding weekends and holidays. Shipping transit time begins when your parcel is picked up by the shipping carrier.