> If you use the typical recipe of 1kg of sugar with 1 litre of water and 75 g of oxalic acid dihydrate to get 1.67 litre of 3.2% OA solution, then the number of grams of the OA dihydrate you need to accurately weigh off = 75 * (total ml's of solution for your hives calculated in the above paragraph) / 1670. I use a beam scale to get the right OA dihydrate amount.]

I'd be interested to see how this results in a 3.2% soution of OA.

My calculations:

50/86*75g / (1000g + 1000g + 75g) x 100 = 2.1 %

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