Got To Love My Hygrometers

[CigarNut]

Originally Posted by bilkay

I just tried the salt test for the first time, having previously used Boveda packs. Prior to the salt test, my hygros were reading around 65% (the normal RH for the beads I use). After the salt calibration, my 3 hygros all read 71%-72% in my cooler. I think it's the salt calibration, not higher relative humidity. And I was hoping I had found an almost free way to calibrate.

The thing with the salt test is that you need to use a specific amount of salt with a smaller (specific) amount of distilled water. If you have too much or too little water, or impurities in the water (tap water) then the RH will be off a little.

Boveda packs are easier...