I put new battwries in my hygro so I needed to recalibrate. I put it in a baggie with a pop cap full of wet salt. Not watery just a grainy, salty, slurry. After 6 hrs I read 76%, after 12 still 76%, It read 76% up until about 34 hours into it when it went to 72% and there it sits 48 hours later at 72%. My instructions for the Hygroset say test 24-36 hours, which do you think is a more accurate representation the 76% or 72%.
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I always use about 12-24 hours and has worked fine for me. Never left it in there for 72. :-)
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Put a new battery in your hygrometer and retest with ten times that much salt.
Then you'll know it's right.
The response you got is wonky. You can't rely on it. No sense in going with a guess when the goal of calibration is to calibrate. :-)
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I would guess that the last response was correct. You probably used too much water. You need to make more of a paste than a slurry.
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I like a ratio of 2 parts water to 1 part salt, worked well for my hygros.
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i was a huge fan of the salt test, until I tried a Bovieda packet. No messing around, no worrying about kocking it over... idiot proof really. its so worth the $3 just for the aggrivation you save.
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Yep easy,cheap andfool proof :-)
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