Shelby07 Posted February 4, 2019 Share Posted February 4, 2019 Sorry if this has already been discussed, couldn’t find anything. I just got 3 Boveda Butlers after seeing the discussion here. I calibrated all 3 at the same time using the three different kits supplied (75% calibration pack and a plastic bag.) All 3 read 80% out of the box with the 75% packs after 24 hours. I then checked my existing hydrometers (2 digital Xikars and 1 standard analog) in the kits. I had previously calibrated them using the salt test. Lo and behold, they also read 80% after 24 hours. So, which should I trust, boveda or salt seems to be a pretty big spread between the two. EDIT: probably should add that this would not have raised an eyebrow if all 3 of the Butlers weren’t off by the same amount as my existing hydrometers. I would think they would be somewhat calibrated at the factory. Link to comment Share on other sites More sharing options...
aphexafx Posted February 4, 2019 Share Posted February 4, 2019 I would trust the Boveda. Quite often, people oversaturate their salt and this will increase the RH in the micro-environment. FYI, for the 'salt test' to be truly accurate, the salt needs to be around just barely damp. The Boveda is also a salt based solution. It will be fairly accurate, ready to go. Link to comment Share on other sites More sharing options...
Colt45 Posted February 4, 2019 Share Posted February 4, 2019 49 minutes ago, aphexafx said: FYI, for the 'salt test' to be truly accurate, the salt needs to be around just barely damp. Ginseng had an interesting post regarding the salt test: Salt Slurry 1 Link to comment Share on other sites More sharing options...
smokum Posted February 4, 2019 Share Posted February 4, 2019 I just installed a butler in my Aristo. After 24hrs it was dead nuts on with the 75% pack shipped with it. Link to comment Share on other sites More sharing options...
aphexafx Posted February 4, 2019 Share Posted February 4, 2019 35 minutes ago, Colt45 said: Ginseng had an interesting post regarding the salt test: Salt Slurry Damp is saturated. I think visible standing liquid is too much water. Regardless, the Boveda will largely remove error and provide the most accurate calibration. But that's just my opinion! ? Link to comment Share on other sites More sharing options...
smokum Posted February 4, 2019 Share Posted February 4, 2019 I assume the butler calibrates itself to the pack otherwise its kind of useless. Link to comment Share on other sites More sharing options...
Shelby07 Posted February 4, 2019 Author Share Posted February 4, 2019 44 minutes ago, smokum said: I assume the butler calibrates itself to the pack otherwise its kind of useless. This was my inclination also but I thought it odd that everything was off by the same amount. Since I posted the question I have seen that the ratio of the slurry should be 3 parts salt (plain iodized) to 1 part water. I am pretty sure my mix was quite a bit wetter than this. So I’m going with the Boveda. Thanks for the replies. 1 Link to comment Share on other sites More sharing options...
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