Those are just designed to suck out as much moisture as they can, where moisture packs like Boveda and others are set for a specific RH. I use 62s but some folks like to keep their flower at 58%.
If you're confident in your hygrometers you can seal up the jars well (when the burping time is over) and check them daily in the beginning and weekly after that to make sure they're staying in range.
If you're confident in your hygrometers you can seal up the jars well (when the burping time is over) and check them daily in the beginning and weekly after that to make sure they're staying in range.