Well Vince let me get the beakers out and see if I can come up with the answer for you
Seriously My alcohol & water mix is 1 Gallon of distilled water minus 8 oz which I add 8 oz of 91% isopropyl alcohol to. Then I use a 10 oz plastic bottle which I add sorry I really don't have a beaker 4 or 5 drops of the jet dry to then add the mix to the top.
Help me with the math Mr. Wizard! I'm probably destroying my records aren't i? Although it seems to work really well as I use a shop vac system to vacuum it.