Water Quality Tester, Accurate and Reliable, TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.

Tests μS/cm (A measurement of conductivity). An indirect measurement of total dissolved solids like metals, minerals and salts. And measures PPM (Parts per million of very dilute concentrations of substances in water. PPM substances depend on what type of water you are testing but in this case measures TDS (Total dissolved solids) in drinking water.I know that it works accurately because you can compare your readings to water quality reports for your local water through EPA or Utility District Water Reports online. Interestingly, the claims made by our City and County exactly matched the reading range on this device. We have the second cleaest drinking water in the U.S. according to the EPA. This verifies the readings as reported are accurate.You can ignore the color coded lights, red does not mean bad water. Compare that to the EPA and other reports. It will often show red even in perfectly clean water. The readings are good and well within the range to claim it is an accurate tool. Just ignore the red and green lights.On a side note we also use a Primpo water dispenser. Tested that water and it comes in at 3 PPM. You cannot get cleaner water.

It’s accurate, fits in your pocket, great tool for ppm and temperature checks, and affordable. I would recommend everyone has any tools that can identify what you are drinking and eating. Most times we really don’t know what we are exactly drinking or eating, at least this is one step, this temp meter 3 in 1, the beginning of awareness. I install RO systems and water softeners and this tool goes from contracting to personal use. Buy it and keep it!!

No, the battery does not last the “whole lifetime” of the meter. You do not specify “how long” does the meter last before the entire device must be replaced. So, does the ENTIRE DEVICE have to be replaced when the battery runs out?!I purchased this device back in 2018. It has been working just fine. However, just today I powered it on and the LCD screen did not display anything. I pulled out the circuit board thinking I just needed to replace the coin cell battery (CR 2032). To my surprise, the battery was wrapped around with some yellow plastic and fused to the device contact terminals. It was not meant to be removed, which is a silly design. I had to use a small plier and small flat headed screw driver to slowly remove the batter from the two terminals. The yellow plastic housing around the battery you no longer need so just dispose of the battery and that garbage yellow “wrapping”. Replaced the battery in the same location the original was found. Used small electrical tape to secure the battery and terminals. Slide it back into the plastic case and powered it back on. The LCD is now brighter than ever and testing different water sources works (try tap water, then bottled water, etc). Now in the future I can replace the battery and just use electrical tape to keep it secured again.The LCD color is nice as it shows RED when water PPM hits above 40 (my case it showed 320!). Bottled water from two separate sources showed 15 ppm and 7 ppm.It’s a tiny lightweight device that easily fits into your pocket or backpack if traveling. The clinic cell battery should last for years but for the company to purposely FUSE the battery to the terminals is annoying. However, looking at the latest photos of this product today, it seems like they changed the battery compartment design. Now you may be able to easily remove the battery for replacement.Taking away one star only because of past flawed design, but it may have been redesigned today. Either way, I was able to DIY to resolve the battery replacement issue for my 2018 model. Other than that, I do recommend this device.

I purchased this product to replace one that I had bought a long time ago and the battery was going bad and not replaceable. The old one worked okay. This one works better than okay, it's quick, easy to read and I feel that is accurate. I'd like to how safe the water is that I'm drinking. I recommend this product.good build quality,gives instant reading

I live in a country with serious issues when it comes to water quality. I have a friend who works in a major Lab that does quality control for food and water and the results i got from this tester were 90% close to what my friends lab has register for every water brand available in our market. Including tap water. What a life saver because specialized "baby water" costs almost 3 times as much as regular water... turns out the share the same quality and amount of minerals!

I’ve now used it in Tokyo and Korea. According to this test, hotel water is fine, which was actually a surprise. But at numerous restaurants in both countries…. It was horrible water. Not sure of what it’s actually testing, or what contaminants are in the water. But it has been a real eye opener. Especially the hotel water, which I’ve never even thought to drink. But now realize it’s fine in a pinch.

Works as expected. Seems to be very accurate. Good to know the quality of water that you are drinking.

Before calibrating this it was off by around 20% (286 ppm on a 342 ppm solution), not sure how accurate it is in general. For a cheap consumer device to just generally measure TDS it's probably good enough, though I'd probably opt for a different one given the claims of this being calibrated don't seem to be true.