2025 New 4 in 1 TDS Meter, Water Quality Detector, Accurate and Reliable, TDS Digital Water Quality Detector, EC and Temperature (° C/° F) Meter, 0-990ppm, Used for Drinking Water and RO/DI Systems

This is super easy to use and I like how it has the chart on the back. I’ve always wondered about what I’m actually drinking so it’s actually fun and interesting testing my water!

Works great & Easy to useReady to use right from the box

Easy to read detecting, especially in low light or dark environments at night.I’ve owned dozens of PPM/EC pens, meters and testers over the decades and this is the meter recommend for PPM. It’s inexpensive and accurate enough for most homeowners or hobbyist. This has good clear readability and easy operation.The device uses smart high-precision intelligent chips and high-quality titanium alloy probes to ensure detecting accuracy.

Am I ever glad I got this, we had no idea how bad our water actually is here in the subdivision we live in. Now we are talking about having an iron curtain installed and a reverse osmosis water filtration system.This was tested with our tap water and also with distilled water and it absolutely 100% worked great. If you want to know what kind of drinking water you have I definitely recommend getting one of these.

Just as described in the description. It can tell temp and particles in the water. I could not test it agenst another water tester but I tested diffrent water sources and it read as expected with each variation of tap, muddy water, and purified water. Hope it will help to inform me on the quality of water when filters need to be changed.

i have a few of these now, side by side comparison to other ones I have show that it's in the same accuracy range as the other, it might show a small variance side by side with another but only a small variance, for example my RO water generally comes out at about 15ppm, this seems to vary a few ppm in each direction if I turn it one and off and keep dipping it, plenty accurate for my needs...

This detector is used to detect the total dissolved solids (TDS) content in water quality. The water detector is batteries operated. The required two LR44 batteries have already been installed in the detector and is ready to use. The detector is compact and looks like a marker pen shape. It is portable and may be carried for travel purpose.The operation of the detector is quite simple. There are only three buttons on the detector. Long press the “ON/OFF/HOLD” button can turn on/off the detector and a short press of it can instantly lock the outcome value. Even without pressing the HOLD button, the detector will still automatically lock the value a few seconds later after the value is stabilized. In order to clear the locked value for next test, just short press the “CLEAR” button. Another “MODE” button can switch the detection modes of TDS mode, conductivity mode, temperature ℃ mode and temperature ℉ mode. Of course, in order to have the detection results, it needs to immerse the detector into water with the water level within the minimum and maximum water line levels.The meanings of TDS values can be referred to the attached manual. For TDS values at 0-50ppm, the water is ideal for drinking and the screen will show with green backlight. Once the ppm value exceeds 40ppm, the screen will turn red for an alert. Its large LCD screen display with backlight can clearly show the detecting values. Moreover, the detector will automatically turn off while there is no operation within 2 minutes. Overall, it is easy to use and portable.

I've tested this TDS meter on a number of different fresh water sources and the results are about what I expect. If you're thinking testing salt water (EC mode), scroll to the bottom for important information.The tester comes shipped in the small blue box shown. Included in the box is the tester (shown) and a 3 fold manual (not shown). The small glass shown is not included. You will need to supply your own glass (and water) for testing. A small shot glass works best to test.There may be multiple versions of this same tester which could support differing battery types. The one I received includes two (2) AG13 / LR44 batteries which are preloaded and ready for use. No need to insert batteries.The tester is easy to use. Once the tester is turned on, the display illuminates green and shows 0 ppm on the display. Pull off the black cap and insert the probe into the water up to the max line level shown. Do not submerge the whole unit. Once tested, the display changes to red or green depending on the number shown. The default testing mode is PPM (parts per million) in water. The tester supports 4 modes including PPM (particulates - ppm), µs/cm (electrical conductivity - EC), celsius, fahrenheit (water temp). The final two modes solely test temperature.Test results for PPM:Cold tap water: 151 ppmHot tap water: 263 ppmBrita water: 123 ppm (see below)Bottled Drinking water: 63 ppmDistilled: 1 ppmNote: the Brita-tested water is using a somewhat old filter and it's also using an off brand filter. I will purchase an original Brita filter soon and rerun this test.I didn't run EC tests at the time because I hadn't read up on what this testing mode meant. The manual itself doesn't offer a chart or information regarding the EC mode. The manual offers a lot of information regarding PPM including a chart that reads as follows:0-50 Ideal drinking water / Reverse osmosis (RO/DI system) / Deionized water50-100 Acceptable filtration range Mineral water100-200 General drinking water200-300 Acceptable range of tap water300-400 High hardness water400-500 The taste is not good500+ High pollution U.S.EPA's max contaminant levelUnfortunately, there is no included chart describing ranges for µs/cm levels. FYI, the µs/cm mode tests to determine dissolved salts and other dissolved conductive minerals. This test is designed to tell you how high the dissolved concentration of minerals are by how conductive the water is. Again, no chart is provided to give advice here.Functionality: Can the EC mode be used for salt water fish tank testing?According to the manual, the testing range for both PPM and µs/cm (EC) is 0-9999 with a ±2% accuracy. While the 0-9999 range is more than sufficient for PPM testing of fresh water, this range is insufficient when using µs/cm mode to test the conductivity of salt water, with sea water capable of reaching ranges of 50,000 µs/cm. Sea water is well above the maximum EC range for this tester. If testing for EC and you see 9999, you will have no idea what level the conductivity tested water actually is. You will have to conclude that the 9999 shown is "very high". This limitation is insufficient when you need to see exact numbers, especially if you are hoping to manage a salt water aquarium using this water tester.The limited numeric testing range of µs/cm precludes using this meter to test sea water levels. For example, if you were thinking of using this meter for testing the dissolved salts in your salt water fish tank, you'll need find an EC meter capable of displaying up to 50,000 µs/cm. Unfortunately, that's not this meter.This meter's limited numeric range makes it best suited for fresh water testing only and for µs/cm situations where dissolved mineral solids remain below 9,999, such as those in drinking water and in fresh water fish tanks.