Salt test for multiple hygrometers?
 

I have 6 hygrometers with wide-varying readings. I'm doing the salt test with all of them in a sealed tupperware container and large ziplock bag. I used a shot glass with the distilled water/salt mixture. The shot glass is only 1/4 full. My question is will this be good enough to get an accurate reading on all 6 hygrometers or should I do 1 at a time?

Thanks,

MCS

Re: Salt test for multiple hygrometers?
 

Sure should work as the hydro do not use anything out of the air. But if you are using anything as big as a shot glass just make sure the salt is not soaked. You want it firm, damp, not soggy.

Re: Salt test for multiple hygrometers?
 

:tu:tu:2

Re: Salt test for multiple hygrometers?
 

I think I did 8 at a time last time I tested. Should work fine. :tu

Re: Salt test for multiple hygrometers?
 

Actually, I'd say its more informative to do them together. Its the best way to see their relative performance.

Re: Salt test for multiple hygrometers?
 

Thanks guys. I thought it would be fine.

MCS

Re: Salt test for multiple hygrometers?
 

Appreciate the posts here. I was wondering the same thing.

Re: Salt test for multiple hygrometers?
 

I think the salt test work on a max of 4.52 hygrometers at a time.

Re: Salt test for multiple hygrometers?
 

:D

Re: Salt test for multiple hygrometers?
 

LOL

Re: Salt test for multiple hygrometers?
 

The last time I did a salt test I had all 3 of my hygrometers in the same container and it did allow me to compare them. They were all pretty close in their readings which makes it easier to swap them around.

Re: Salt test for multiple hygrometers?
 

dammit...sorry...stupid English language always gets me! :D

Re: Salt test for multiple hygrometers?
 

Only for the round hygrometers. If you are testing the rectangular ones then it only works for 3.89 hygros.

Re: Salt test for multiple hygrometers?
 

Digital hygros are more sensitive, so you should be able to calibrate more than 27 at a time.

Re: Salt test for multiple hygrometers?
 

I would only test a digital once every couple years as the salt/water may corrode the electronics

Re: Salt test for multiple hygrometers?
 

I usually test my Hygros using 65% Boveda packs or Boveda Calibration kits.

Re: Salt test for multiple hygrometers?
 

Actually that's the best way to go as you have a constant of the shot glass/salt where if you did them individually, the mixture could be different. This way you what the actual readings are compared to each other.

Re: Salt test for multiple hygrometers?
 

According to Ron at Boveda, the packs are +/-2% at 70 degrees, he never told me what is was in warmer or cooler temps.