7 in 1 PH Meter Gomass 0.01 High Accuracy ph Tester Digital for Water TDS/EC/Salinity/Temp/ORP/S. G/PH Pen Tester Drinking Water, Hydroponics, Plants, Aquarium and Pool

I got this mainly to measure pH but the other functionality is nice. I am a big believer in calibration and I can calibrate pH and EC with standards so that's what I did. Calibration was easy and readings were stable after calibration so I assume it's fairly reliable. I'm not sure about the other readings because I did not have calibration standards, but I did have some test strips to compare with and this meter was reading similar values to the test strips. I wouldn't use this to gather data for a peer-reviewed journal article, but I think this is a great tool for routinely measuring your water quality especially if you are trying to preserve plumbing or testing a water filtration system.

The 7-in-1 PH Meter by Gomass is a versatile and reliable tool for anyone needing precise measurements of water quality. It excels in testing pH, TDS, EC, salinity, temperature, ORP, making it ideal for a range of applications from hydroponics to aquariums. The digital display is clear and easy to read, while the calibration process is straightforward. Accuracy is impressive, with measurements consistently aligning with expectations. However, the build quality feels somewhat delicate, and the included instructions could be more detailed. Overall, it’s a valuable instrument for those who require detailed water analysis.

Awesome tool to have

This pH meter is okay for basic use but not very reliable. The readings fluctuate a lot, even after calibration, making it hard to trust the accuracy. The build quality feels cheap, and the screen is difficult to read in certain lighting. It works, but only if you don’t need precise measurements. Spend a little more for something more dependable.

Tester looks like it has been used. NO USER MANUAL OR ANY TYPE OF INSTRUTIONS.

This is a good price point for a ph meter and it’s accurate.

I understand that the accuracy is going to vary at this price point but all of the features it claims to have makes me wonder which one is the lagger. Tested several liquids using the ppm and it only changed slightly. Going to try to recalibrate again but so far its performance is questionable.

I like that this pH meter is easy to use. It seems accurate and readings are quick. I wish the screen was slightly larger just for ease of reading. If you need a simple meter that gives quick readings, give this particular unit a try.