TDS Water Tester, New 4 in 1 Tds Meter Digital Water Tester -TDS EC & Temperature(°C,°F) Meter, Accurate & Reliable Digital Water Testing Kits for Drinking Water, RO/DI System,Aquarium etc

Works great and instantly gives you an idea the quality of your tap water and your refrigerater filter quality. My tap was 140 ppb, my frigidaire filter was like 125, and walmart bottled water is literally zero.Tests instantly, no chemicals. Perfect.

Great EDC device. This, a carbon monoxide detector and a UV flashlight and you are ready for any situation.

Kind of hit or miss and doesn’t come with any calibration powders. It’s basic.

Went to Cabo . Worked perfect

The item works decently. When testing different water the TDS seems to be accurate or at least close. The temp doesn't work though. I can go from refrigerated water to tap water and it is exactly the same temp. Really wish the temp worked but the unit is easy to use. Display is large enough to read.

Readability is good. It was worth the value for money. The quality and functionality battery. Life is good and it is easy to use. I tested my RO water and tapwater and it seems to work as it should.

To use this meter, you must understand two things. The temperature correction to the TDS reading matters a LOT. And this meter's temperature correction is EXTREMELY slow. The "30 seconds" in the instructions is not nearly long enough if your water and your meter differ in temperature by more than a degree or so.I'm using this to test my tap water. Straight out of the tap, it's about 10 degrees F colder than my kitchen.At first, I thought the meter was garbage, because the readings were all over the place. The longer the water sat around, the higher the TDS reading got. I eventually realized that's because the water was warming up.Now, I take a sample, let it warm to room temperature, and the meter is extremely consistent from reading to reading.Bottom line, if you think the readings from this meter aren't stable, then consider "operator error" as a possible cause.I feel that I got far more than my money's worth, for $6 or so. But for $6, you get a meter that's reasonably accurate, but very slow. This meter does, eventually, make a temperature correction to the reading. But, it does so extremely slowly.

Terrible. The product description stated it would check for water hardness, chlorine, red iron, etc. The instructions are awful. You have no idea what particles you are checking for or what. I needed this to work, and as usual, it was too good to be true. I can't get my money back quick enough..