FartfulCodger said:
I don't have a chemistry background, so please don't treat this as guidance, but is it unreasonable to think someone could mix up their own BAC water? For example, bring distilled water to a boil, put a lid on it and allow it to cool, then introduce the correct quantity of benzyl alcohol? If the solution were used right away, what could actually go wrong? Another option might be to put it into sterile vials and store them in the fridge, using them up within several days. Do endotoxins in distilled water need to be a concern? And if they do, is it possible to buy sterile water without a prescription?