Now you can perform a high and low-RH calibration for your hygrometers.
Simply place your hygrometer inside the bag, close the zipper, and wait 24 hours. A perfectly-calibrated hygrometer will read 32% RH. If your hygrometer reads above or below 32%, adjust the calibration by the number of percentage points it is off from 32%.
Completely maintenance free - no activation required. Easy to use.
Exterior Bag Dimensions: 5.5'' x 7'' Interior Bag Dimensions: Approx 4'' x 4.5''
Lasts approximately one year, good for multiple calibrations. Shelf life before opening the pack is a minimum of 2 years.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 6.14 inch
Height : 0.87 inch
Length : 6.85 inch

Item Weight: 4.8 ounce (View shipping rates and policies)
Shipping Weight: 7.04 ounce (View shipping rates and policies)

ASIN : B00O929V0U