Water Testing Kits for Drinking Water- 4 in 1 TDS Meter TDS EC & Temperature(°C,°F) Meter,Accurate & Reliable Digital Tap, Well, Swimming Pool,Hydroponics, Aquarium, RO/DI System

It works well and instantly.

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.

Using this is as simple as removing the protective cover and dunking the pronged end into water (no higher than the line). The LED screen give the reading. There are four modes, but no clear understanding in the short instructions provided explaining what each mode means. I understand the difference between celcius and farenheit but not the other numbers displayed. For this reason I gave it only 4 stars, not 5.

Very simple to use. Consistent readings. Tested bottled RO water w some minerals added back at 23 TDS. Our city water coming from our sink is 467 tds. fridge reading (w a carbon filter) read 25% less. Supposingly, TX allows up to 1000 TDS but it is 300+-deep water we are now drinking; something we did not drink b4 electricity and deep wells. Trying to reduce TDS to 200 or less AND not use RO water. Absolute best setup and what kind of water is best for my family is hard to assess but this tool gives me enough info to test filters' ability to reduce TDS.

I bought this to replace the one which came with my ZeroWater pitcher (after replacing it once with the original). This is much better because it has a replaceable button battery (the battery case can be difficult to open). It's as simple to use as the original and easy to read. It's great value for the money.

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.

I recently bought this TDS Meter to test the TDS levels of my drinking water at home, and I’m really impressed. It’s very easy to use, gives quick readings, and seems highly accurate. I compared it with some known values, and the results were spot on. The added temperature feature is a nice bonus. It has definitely helped me better understand the quality of water I’m consuming. Highly recommended for anyone concerned about water purity!

This water tester is a must living a region with hard water. Super quick and intuitive to use: I have been able to measure effectiveness of filter replacements or an RO upgrade.

Pretty accurate reading. But no backlight as shown in the pictures.