Use this Boveda One-Step Calibration Kit - 75% to calibrate your hygrometer or humidity sensor in order to provide the most accurate readings.
This kit contains 1 Boveda 75% RH pack together with a calibration bag. All you have to supply is the hygrometer or humidity sensor and you'll be well on the way to accurate RH readings.
- Exterior Bag Dimensions: 14 cm x 17.8 cm (5.5" x 7")
- Interior Bag Dimensions: Approx. 10 cm x 10.8 cm (4" x 4.5")
Shelf life for the 75% RH calibration kit is 4 years
Remains accurate for 3 months after opening.