I have used Boveda and Integra Boost packs along with humidity indicators in jars for several years 58's and 62's. The hygrometers are on point with the packs even on 2 test jars after 2 years. IMO, the hygrometers are most useful to me in the first couple of weeks of the cure for peace of mind, otherwise they are somewhat unnecessary after they hit the 62 or 58 mark. After 2 years with the 2 test jars i have, terps. are still pungent, although thc has degraded somewhat, although, no science - just personal experience.
****the hygrometers are most useful when you first jar to see if the weed is to wet....if so take weed out of jar and leave out for a few hours. I like to jar around 64ish and let the packs do their thing***
Hope this helps....but this is just my opinion.[/QUOTE]
I bought cheapo hygrometers on ebay....2 different china brands....and both are shitty...and wouldn't recommend the brand....i test them and toss the ones that aren't accurate.