Need Help with digital Hygrometer Calibration

[smokin_nightly]

Originally Posted by prflani

I'd just like to ditto the sentiment that Boveda packs work well for checking calibration...They are NOT more reliable, however...In fact, the Boveda packs are filled with salt slurry, although salts other than sodium chloride are used in the packs that give RH values other than 75%...The traditional salt test works just as well and gives faster response than Boveda packs because there is typically more exposed surface area and no membrane through which the moisture has to pass...

I'd also like to clarify other statements by assuring you that the salt test does not create a corrosive environment. Salt does not evaporate and is not present in the airspace above a salt slurry. Manufacturers of hygrometers state that warning about salt testing because the salt or salt slurry may ruin the hygrometer if you spill some on it. Provided you take precautions against getting salt or salt slurry on the hygrometer, there should be no problems...

I have always wondered about that...Thanks for clearing that up Phil...