It looks like a fancy thermometer. But it’s a purity detective. You dip it in, and it zaps the water with electricity.
Pure water is a terrible conductor. Impure water lights up. The tester reads the electrical flow and spits out a number. That number is your TDS level.
What’s Swimming in Your Glass?
Think of your water as a busy city. TDS counts every resident: calcium, magnesium, sodium, and even tiny bits of lead. Tap water is usually busy. Distilled water is a ghost town.
A reading of 0 to 50 ppm is practically empty. It tastes flat and boring. A reading of 300 ppm is like a party in your mouth. But a reading of 500 ppm? Your water might taste like a rusty penny.
