TheLorax
Awardless studette
Glacial Mist Purified Water. It obviously goes through a purification process but I've not seen a 0 reading in my life from my TDS meter or the last one I had that is out in the woods by a pond somewhere lost forever. I don't have the one in the photograph though. I've got a different brand that was a tad bit more expensive but I swear I have never seen a 0 reading before, not even on distilled water. Distilled water was giving me readings of around 0.7 to 0.9 if memory serves me... and it doesn't much lately. Granted, most of the bottled water I've tested has never been purified so I need to keep that in mind since I've got a Menards close by and .59¢ is cheaper than what I pay for distilled water in a pinch. What grocery store do you go to that you were getting 0 readings on water that you only paid .39¢ for?
Have you calibrated your meter lately?
Have you calibrated your meter lately?