It’s almost magic: the meter sends a tiny electrical current between two metal probes. Water that’s full of dissolved solids conducts electricity better than pure H2O. The meter measures that conductivity and converts it to a TDS reading.
No, it won’t shock you—the current is incredibly small. It’s like a shy little spark asking your water, "Hey, what’s your secret?" and getting the numbers back.
TDS METER - Agrawal Total Solution
Just remember, a TDS meter cannot tell you what those solids are. It won’t detect bacteria, viruses, or specific toxins like lead. It’s a count, not a identity card.