That Boveda test kit is junk IMO.Try this.
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Cut-n-paste
Salt Test
This test is for analog hygrometers which are not pre calibrated.
Like chemistry? Neither do I... so I will keep this chemistry stuff as brief as possible. In nature, when salt and water (NaCl and H2O for you science aficionados), are in a saturated solution at equilibrium, the resultant humidity is 75%. This gives a fantastic reference point to calibrate your hygrometer. Here's the procedure you can use to create this science experiment: you need a Ziploc bag, a beer bottle cap (or other small container) a small amount of salt (regular table salt will work, save the Mediterranean sea salt for cooking), and regular tap water.
Place the salt in the bottle cap (or other small container). Dampen the salt with the water. Do not put so much in that the salt gets "soupy". You want a damp pile of salt in the bottle cap. Place both the hygrometer and the bottle cap full of damp salt in the Ziploc bag and seal it well. (It is important not to let air in or out while the test is going on.)
Keep it like this for at lest 8 hours. After 8 hours in the damp salt environment, the actual humidity inside the bag will be 75%. Compare it to your hygrometer; your hygrometer should also read 75% if it is properly calibrated. 99.9% of hygrometers will not read 75 at this point, if yours does, today is your lucky day and we encourage you to buy some lottery tickets (please remember me if you win!) If your hygrometer does not read 75, then you will know exactly how far off your hygrometer is off at this point, note the amount and direction, such as subtract four or add 10.
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This'll tell you if you're truly holding 72% humidity.I perform this on my hygrometer's once a year or so.
If in fact you are at 72% pull those packs out and go to beads.
Ron
