I have read this "The TDS meter calculates a general conductivity measurement that depends on the overall amount of minerals dissolved in the water.", and so I bought one...
I measured the following
- Distilled water (1 ppm)
- Rainwater (2-6 ppm)
- Tap water (53-60 ppm)
- Kirkland(costco brand) Purified water [with mineral added for taste] (20-23 ppm)
I guess what I'm trying to ask is …
1 - Do I just trust the TDS meter?
2 - Is the Kirkland purified water safe? (don't get me wrong, I'm definitely not using it)
3 - If you have a TDS meter, have you tested distill water and is it the same result as mine?