Instruct: Classify a review as either positive or negative.
Query: Excellent, experiment grade.

The person who did the review about not being food grade has obviously NOT done their research, and h2o2 should NOT be used for "cleanses" as if ingested without treating it may injure you. Being food grad has nothing to do with the percent hydrogen peroxide, only the purity. Food grade means hydrogen peroxide and water, no junk or stabilizers. Anyway, I used this in chemistry to make HMTD and it worked fine, but with low yields. However, all of that 35% stuff is super expensive so I just went for this.