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I think it's possible that rest 30% is water. Can't say for sure.

The liquid I used states ingredients as isopropyl alcohol, aqua, benzalkonium chloride, and polyaminopropyl biguanide. I thought...

What grade of alcohol are you using? Many alcohol rubs contain water more or less and since the alcohol just degreases everything, the blade rusts in a jiffy. I did a little disinfecting test on a...