you could probably get by with just 91% from the drugstore just fine, once the bottle is open any anhydrous liquid will start to absorb water from the air. I bet my bottle of 99% pure iso is about 85-90% after being opened and shut a number of times. It would work just as well, maybe take another minute to dry
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“How do I get to the next level?” Well, you get to the next level by being the first one on the range and the last one to leave.” – Jerry Miculek
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