Easy-to-read card is ideal for use with bottles, chemicals, plastic bags, electronics, dessicators, and storage containers. Maximum range (highest humidity attained when exposed for 24 hours or more) is 50 to 90% RH—orange dot indicator changes to yellow in increments of 10% RH. Maximum memory range is readable to an accuracy of ±5% RH at 24°C (75°F).

Reversible current humidity (0 to 100% RH) changes color from blue to bright pink in increments of 10% RH; accuracy of ±2.5% RH at 24°C (75°F). Each card arrives individually sealed in a clear moisture-barrier bag with desiccant to keep the card dry and provide for an extended shelf life.

Traceable® Products come with an individually numbered Traceable® Certificate provided with each unit, assuring accuracy from our ISO/IEC 17025:2017 (1750.01) calibration laboratory, accredited by A2LA. The certificate indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMIs) that are signatories to the CIPM Mutual Recognition Agreement. Every Traceable® product undergoes an intense vetting process before it can carry the Traceable name, saving you both time and money by eliminating the need for separate calibration.

Guaranteed to have at least one year of calibration remaining on certificate.