Reader Question Of The Week – NSF 61

The reader question of the week comes from a colleague, old friend, electrical engineering genius, and soon to be Doctor Claude Abraham Ph.D. Claude writes: Claude Abraham May 15, 2022 at 12:52 pm Edit “Tom, I have seen a product additive made for purifying water out in the wilderness. It says it is NSF 61 certified. Does NSF 61 mean it is safe to drink from?” In a previous but…