Will this Potassium Permanganate work?

[Chicago Discus]

Mad scientist here. My concern with SiO2 came indeed from the Food Consumer article cited above. Good call! If the dosage in the study was in fact much higher than anyone would normally use, then it really is of no concern. I just saw the article and made a decision to look for an alternative source... a lab grade Potassium Permanganate that does not contain other ingredients, and that was not made specifically for the purpose of regenerating water purification equipment.