[Jane Long]

Thanks for the recipe.

I have some 50% (??) Isopropyl and some 91%....how much 91 should I add (to say a cup) to make the 50% into 70%?

1/3 C?

Math’s hard ... lol.

[Undecided 2012]

1/2 and 1/2

[goodnesswins]

Haha...it’s Friday nite...not going to try