Salt Water Test for Hygrometers

[Heritage Hens]

Has anyone had experience with doing the salt water test for hygrometers?
I recently did the test on several of my hygrometers and now I am having trouble figuring out how to calculate the descrepancy between each one and the 75% RH factor.

 

[Highlander]

OK so as you know the hygro should read 75% after 24 hours in a sealed container with the salt mixture. Whatever yours is off by then you just adjust accordingly in the incubator, so say your hygro read 70% and you are shooting for 40% humdity in the bator then you adjust the humidity until your hygro reads 45 as it was 5% low. If it read 78 after 24 hours you would adjust until your hygro read 37 as it reads 3% high. Hope that helps.

 

[bargain]

http://exoticpets.about.com/od/herpresources/ss/hygrometer_7.htm

I think this page will help you .....If not, pm me with your readings and I'll be glad to help...Hope this helps you and have a blessed day! nancy