APEC TDS Meter Digital Water Quality TDS Test Kit Meter with Carrying Case, 0 to 1999 ppm Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy

Great buy. Super easy to use right out of the box, and the simple interface makes quick checks a breeze. The build feels solid and durable, the carrying case is a nice touch for keeping it protected. Readings come up fast and consistently which covers all my needs for household water testing. If you want a straightforward, reliable TDS meter that’s built well and hassle-free, this is it.

Works better than I'd thought. My water is cleaner than I'd thought. Safer.

Make sure to test water of equal temperatures when comparing them. For fun I tested hot and cold, expecting the same results, but to my surprise, they were markedly different. I was initially confused as to how my hot water (104.2 degrees) would read 109 and my cold water (64.4 degrees) read 62, but figured out it was in fact due to the difference in temperature and nothing else. After setting a glass of each on the counter and letting them both equalize to room temp, they bold read 68 TDS. I would venture a guess that the increased temp makes the ions move more quickly, causing the meter to miss read the levels. I would like to know what temp is ideal for the most accurate reading, but, at least I do know you can make an apples to apples comparison if the temps are the same. Also, did some testing on my standard Brita filter. Tap water was 68, one pass 28, second 19, third 14, fourth 12, fifth 12 again, sixth... you guessed it, 12 again. Thought it was interesting, and maybe someone else will as well. Easy to use, easy to read, and as far as I can tell it seems to be accurate but lack the instrumentation to verify that. I just know it read levels out as expected (numbers went down with filtration each time) and that was good enough for me!

Handy little tool. I just installed a R.O. system under my sink. This device helped me know that my well water really isn't that bad (TDS ~175), and after some research I now know that I should expect my R.O. filters to last on the longer end of their life expectancy. I have used it to check the quality of my R.O. water output (15), and even check the bottled water that gets delivered at work (40) as well as various faucets in my house. Several other reviews mention longevity issues - I just got mine, so time will tell how long it lasts.

Out of packaging it didn't work. Turned out to be a defective battery. Replaced battery and it works great for testing my reverse osmosis system.

Everything tests out at 30-37 ppm. I did not believe that all our drinking water was that low! So.....I bought some 300+ ppm control and it tested out fine. I then made my own 1000+ ppm control and it tested fine. I will add to this review as I am going to compare numbers from a different tester using controls that I know. So far so good A nifty little tester. I give 4 stars because I would like to see an appropriate vial of control INCLUDED in the packaging. Very low cost and the buyer could see the calibration of , say, 1000 ppm and compare to their readings of household drinking water and stored emergency water. Overall I would recommend this to buyers.

Ordered, stuck it in the water, numbers appeared. Haven’t checked for general accuracy? I wouldn’t pay a lab, but third party says average ppm is 8-11 ppm for the state OR. Reading is 31? Made me think a filter isn’t worth it.

Muy bien

Mide la cantidad de solidos disueltos en el agua. Se supone que el agua para beber debe tener entre 300 y 500 TDS para ser aceptable, y menos de 300 TDS es excelente. El agua e-pura por ejemplo, marca menos de 20 TDS, el agua de la llave en mi colonia marca 370 TDS. Atención! este aparato no mide la pureza del agua, solo la cantidad de solidos disueltos, no puede asegurarte que tu agua no contenga bacterias o viruses.

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