Thank you! I would like to make homemade all purpose cleaner and
the recipe calls for a 1 cup of vinegar with 5% acetic acid content
mixed with a 1 cup of water. I only have… vinegar with 9% acetic
acid. Therefore I have to use 1.8 - 2 times less 9% acetic acid
vinegar to get the same concentration as if using vinegar with 5%
acetic acid content?
FOLLOW UP ANSWER: For homemade cleaner, you don't have to be exact.
You can use 1/2 - 3/4 cup of the 9% vinegar + 1 cup water (or any
multiple thereof). (MORE)