F) 35% Food Grade: This is used in the production of foods like cheese, eggs, and whey-containing products. It is also sprayed on the foil lining of aseptic packages containing fruit juices and milk products. THIS IS THE ONLY GRADE RECOMMENDED FOR INTERNAL USE. It is available in pints, quarts, gallons or even drums. Various suppliers are mentioned later in this article.
G) 90%: This is used as an oxygen source for rocket fuel.
I wouldn't know how to remove water from 35% H2O2 (Hydrogen-Peroxid) to condense it back to 90% explosive rocket fuel H2O2. I think we would have heard of 35% food grade being explosive by now, in the news, or at least from a warning label on the bottle.