It's quick. It's easy. It's exact.
Boveda's One-Step Calibration Kit is quick, easy and exact. Without proper calibration, a hygrometers readings are merely guesswork. And guessing about RH puts moisture-sensitive products at risk. Chemists and lab professionals determine the accuracy of a hygrometer with a "salt" test. The Boveda One-Step Calibration Kit is the ultimate salt test. Boveda's Calibration Kit ensures a consistently accurate reading by adding and removing pure water vapor to achieve and maintain 75% RH in the controlled environment of the Calibration Bag.