Pious PH Tester Digital, 5 in 1 PH Meter for Water/Salinity Meter/tds/ec/Thermometer, Pool Salt Tester with Constant Temperature Compensation, Suitable for Drinking Water Swimming Pools Aquariums

This helped me correct readings from a bad salt cell. Great device.

I’ve been using this handy tester for my hydroponic garden, and it’s been fantastic. It gives fast, accurate readings for pH, TDS, EC, salinity, and temperature, which helps me keep my nutrient levels perfectly balanced. The constant temperature compensation ensures my readings stay consistent, even when my water temp fluctuates. It’s easy to calibrate and the display is clear and easy to read. I'm getting serious about hydroponics and this is a must-have for keeping my plants healthy and thriving.

I have had two of these and have been using them for two years. PH measurement is sufficiently accurate and very convenient. Also, you can always recal if you want. Salt measurement is crap. It was accurate when received but went south pretty quickly after use.

I did not buy this tool to measure my pool water but rather to test the water quality of water coming into my house and to help maintain my hydroponics vegetable grow. I tested it against a known accurate meter and they both read the same for PPS, EC and pH. I like the easy to ready readout and it appears the 3 LR44 batteries are easy to change. I looked at several other meters that look identical to this one and most are listed as IP67 waterproof. This one has rubber o-rings so I think it's safe to say it is probably also IP67 waterproof.

Pretty cool water multi-tester. I am pretty concerned about water quality, so I have multiple water testers for different applications including PH, TDS and Salinity, but Pious tester has all these features built into a single device. Having a temperature tested in a good to have feature. I've tested it vs. my other devices and it seems to be pretty accurate in terms of metrics. Very fast reading, great functionality, compact size. Great value for the money.

This ph meter is not accurate after a few weeks of use and if u follow the instructions to calibrate. It will make the pobe completely off range and no longer bebe able to recalibrate. It is now reading my6.18 solution as 9.18. Save your money and look for something else. At the minimum if u already bought it. DO NOT following the instructions provided Update 9/19/25 Seller replaced faulty meter. Let see how the new one works so far. 5 stars for the seller

This was completely useless. The instructions were incomprehensible, and there was nothing to tell you what was considered to be a good/bad/normal/abnormal reading. I was checking on salt and it said .02 -- but what does that mean? Is the water coming out of the faucet too salty? (I just installed a water softener, which adds salt to the water, and was worried about my garden and my outside pond fish.) Plus I have no idea if I was actually using the thing correctly because of the useless instructions. Don't bother. Also, it is cheaply made.

Wanted a quick way to test water for my aquarium. Simple to use and accurately measures TDS, pH, and temperature. I tested against another digital meter as well as API test kit and they all came in very close for the readings. Measurement readings for TDS and pH fluctuates slightly and is slightly slow taking a few seconds to settle at a general reading, but I assume it’s always calculating the small changes in real time. The one thing I don’t like is it uses three LR coin style batteries which can be expensive. The meter is bulkier than just a standard TDS meter so a standard AA or AAA would have been nice. Other than that, the meter is a nice way to get several readings at once without fiddling with other tests.