I put them in a jar of 62% Boveda for a few hours and they never left the very low 50s. So I did a salt test and instead of 75% they all showed 61-63%. So I repeated the salt test with a couple of other inexpensive hygrometers and both hit 75% within a few degrees while stuck in the low 60's. So don't freak out, they really are all 11-13% off.
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