Experiment to concentrate and test h2o2
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A little experiment to do room temperature vacuum distillation of hydrogen peroxide.
I started with actually almost a liter of 3% h2o2 (I know I said pint, but it was almost a liter.)
I performed it outside with a heating pad on the h2o2 flask, so the hot flask was about "room temperature" and the cold flask was colder than room temperature, so the water migrated to there.
I stopped at about an estimated 30% concentration for safety reasons.
To demonstrate that it had indeed concentrated, I tested it on some red organic samples presumably containing catalase.