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  1. ih,tony A good way to check the accuracy of your formic acid is by checking the specific gravity of the liquid with a Hydrometer; a hydrometer measures the difference in gravity (density) between pure water and a liquid. I bought mine at a beer and wine brewing shop.
  2. ( oxalic acid ) hi have been reading and looking at videos on oxalic acid. i would not drizzind on with suger -water it will kill brood and bee. the oxalic acid must be put on with a vaporizer a 12v battery one or a gas one. i am building a gas vaporizer for my hives. you can only read /look/do and give it a go. if works your not you can say i have done it.
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