10-20-30% Reversible Humidity Indicator Card

10-20-30% Reversible Humidity Indicator Card

This Humidity Indicator Card is a color-change indicator and is reversible. As the humidity increases, the chemically impregnated spots change from a blue color (DRY), through a lavender, to a pink color (HUMID). As the humidity decreases, the spots change from a pink color (HUMID), through a lavender, back to a blue color (DRY).

Each of these cards is accurate to ±5% relative humidity (RH) at 75°F (24°C). Other humidity combinations are available by special order.

NOTE: This card has been impregnated with a chemical that may cause corrosion of some metals; therefore, AGM recommends that the card not be placed in direct contact with metal objects.

Additional information

Weight 0.0000 lbs
Dimensions 0.0000 × 0.0000 × 0.0000 in
Previous Part Number


Rectangular Card RH

10% -30%

Card Type


Product Size

2.00" x 3.00"


Blue to Pink

Standard Packaging

125 per pint

Product Sheet

Safety Data Sheet