Quote:
Originally Posted by MagicDrop
18 hours. The paperwork that comes with the hygrometer says 12 hours the link above says more then 8 but I can leave it in a bit longer to get to 24
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The time isn't related to the hygrometer. If you do the test in a larger container, it will take longer. It also depends on how much of the salt mixture is in there. You need to just keep going until the measurement stops changing.