pH EC Meter for Water Hydroponics, PPM Meter for Nutrients, Measure pH PPM Conductivity Temperature of Hydroponic Garden Water and Nutrient Solution, EC pH TDS Meter for Water, Aquarium, Pool

I’m actually surprised at how well this ph meter works. I owned for 6 months now and started to have doubts about its accuracy. I purchased a more expensive $85 meter and after calibrating it I tested both meters in water.To my surprise Both came out with the same reading. I have only calibrated this meter once when I first got it. Very nice to see a $20 meter holds up to a much more expensive one. This only complaint I have about this meter is lack of the backlight staying on while I measure the water. For the price this is an extremely well made meter that holds calibration well over time. I would definitely recommend this meter

If you want $500 meter accuracy, go buy a $500 meter. If you want $150 meter accuracy, this one will get you close enough to where it doesn't matter.I've been using this twice daily to check the levels in four 10 liter hydroponic buckets growing Carolina Reapers, and I've been cross-checking and verifying the readings with a Bluelab pH pen and Truncheon with 3 part/value calibration fluids twice a week.So far, the EC and TDS values have been within +/-150 points of the cal fluid and Bluelab meters and the pH reads a very consistent +0.11, the temperature is within +/- 2 degrees fahrenheit as judged by a $400 Fluke thermocouple thermometer.As long as you're willing to calibrate this meter properly and check around monthly that it hasn't drifted off, it gives startlingly accurate and CONSISTENT (arguably more important than accuracy if you use good calibration fluid and record how far off the readings are) results. The biggest annoyance I can possibly find is that you need to have still water, no bubbles or large flow and you need to let it sit in the water for 30-40 seconds to get a truly stable reading, but once it's stable it's accurate!It's amazing that cheapo meters like this can give consistent readings that 5-10 years ago were relegated to the $600+ commercial equipment realm.

Short product life approx 3 yrs

It worked great until it did not. It will not calibrate anymore, so it is useless. I tried to email the manufacturer as I could not find a phone number, but I have not received a response.Update** 04.01, as soon as the manufacturer seen my review they reach out to me. The got on the case lightening fast. They sent me a new tester and I already have it. The customer Servcice was great.

Worked OK at first after calibrating it new out of the box.Reading seemed to vary about .05. 7.01 solution would drift from 7-7.5. Even immediately after first calibration.The powder calibration solutions are trash, take forever to dissolve, and require too much purified water, in my opinion.I used this meter for around 5-6 months and is already broken. I followed all instructions to a point, cleaned, and stored, exactly as described.Now, approximately 6 months later, whenever I use the meter, the PH reads an entire point high - 7.0 reads 8.0 - even immediately after a new calibration. I calibrated it several times, but whenever I would turn the unit off and then back on, would read 1 point higher than the actual solution ph. This has caused me issues and stress by putting my trust into a faulty piece of "technology" giving me FALSE READINGS! DO NOT BUY! Not just this brand, but every PH meter cheap or expensive that I have used has become inaccurate after 6 months.I am quite convinced these digital meters are a flawed ineffective and expensive technology to "read" PH. Now I am stuck with a broken piece of trash that I can't seem to return now. I will go back to using liquid or paper tests.

I checked my hydroponic solution with pH paper (narrow range) and got a reading of 6. When I got the new meter out of the box, I decided to check it before going through the calibration process. It read 6.2, agreeing with the pH paper. I also checked the EC reading against a standard and it was close enough for my purposes. So, I am happy out of the box. I can't yet comment on the long-term performance, obviously. One thing I didn't like was the use of batteries that are harder to get than standard AA or AAA. But, if the ones that came with the meter last, this is a minor quibble.

I was in the market for a decent pH/PPM Meter that wouldn't break the bank. A few people recommended this one, and most the reviews I read here were good so I went for it. Shipping was quick and the meter came with good instructions and buffer solution. I was able to calibrate with no issues.The protective cap has a protective sponge that is to be kept moist per the instructions, and you're instructed to add a little pure water to the sponge if it dries. The manual also states water droplets are added during production to maintain moisture of the probe. Since receiving and using the meter, I had no issues with the sponge drying out. I followed all instructions that were provided to, and since I've used a similar meter in the past I was comfortable when using.About 2 weeks after using the meter, I removed the protective cap, only to see the sponge was covered in what looked like white mold. The probe itself was also moldy. I carefully cleaned the probe and cap, but with each use, the problem continued getting worse. I reached out to the email provided in the manual as I was unable to reach out via Amazon. Response was quick, as follows :"We are sorry to hear that the sponge is moldy. As the weather temperature rises, no preservatives are added to the sponges, causing the sponges to become moldy.Please clean the electrode tip with a cotton swab or brush, and use tweezers to pull out the sponge.This is a newly upgraded electrode, even without a sponge, it will not affect the pH reading".I did question removing the sponge, but I was assured it would be OK. I very carefully cleaned the electrode like Lucia told me to. For the time being, it seems to be working just fine, but I'm nervous that it will malfunction. I'll update my review if anything changes.

Dont waste ur time and money on this, it broke a month n a half after buying it. Now I'm stuck n can't return it.

Followed instructions exactly. Tried 20 times. You’re supposed to turn on unit, place it in 7 ph calibration solution, let it settle and then hold cal button for 5 seconds. That’s supposed to enter calibration mode. Tried holding everywhere from 2 seconds to 30 seconds. No matter what it won’t calibrate making it useless. Unless the seller can fix this I’ll be sending it back. Waste of money and most importantly time.