Control Company 4192 Traceable humidity card with calibration 6/Pk.

FEATURES

• Individually sealed cards indicate both current humidity and the maximum humidity attained
• Maximum relative humidity attained is indicated by the highest numbered hole containing dissolved crystals
• Monitor humidity levels in shipments, optics and packaging
• Easy-to-read cards are ideal for use with bottles, chemicals, plastic bags, electronics, desiccators, and storage containers.

COLORS CHANGE AS HUMIDITY RISES/FALLS

Dual ranges are Current and Maximum. Current range is 0 to 100% relative humidity. Color changes from blue to lavender in increments of 10% RH. Reversible indicator changes color as the humidity increases and decreases. Readable to an accuracy of ±5% RH at 75°F (24°C).

SHOWS MAXIMUM RH% REACHED

Dissolved crystals will cause the paper around the hole to turn blue. Once dissolved, the reading will not change. (NOTE: for crystals to dissolve properly, the humidity must be maintained at or above the indicated value for a minimum of 24 hours). Each card is individually sealed in a clear moisture-barrier bag with a Humidity Sponge™ desiccant to keep the card dry and provide for an extended shelf life.

TRACEABLE® CERTIFICATE

Multi-point calibration on an individually-numbered Traceable® Certificate which assures accuracy from our ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement. Card size is 4 x 4 inches.