2-in-1 pH Temperature Meter Test Kit - Digital Monitor Tester Sensor | 0~14.0pH Measurement | Auto Calibration | BNC Electrode Probe | Ideal for Hydroponics, Aquarium, Drinking Water, Seawater pH Testing Review

Yes, I could mention that it is very accurate and inexpensive, but I would like to say that it is very easy to use and comes with easy to follow instructions on how to calibrate. Time will tell how often this is necessary. Hopefully less than others I've had for my indoor garden.

Inexpensive. Nice packaging and easy to calibrate, has been fairly accurate so far (testing pH within ±0.1 range), came with the power supply I need, tested the control solution with a pH 6.8 buffer and it gave recommend a stable value of 6.8 to anyone who needs a portable pH meter.

For the price this thing works pretty well, but if you're going to be using something to read data all the time it's probably best to take it out and flush the sensor with distilled water every few times to clean from days to a week and recalibrate it if you're not getting accurate readings in distilled water, things like nutrient solutions or rainwater tanks can drop readings over time, but overall I was happy

For the price, this thing works pretty well, but if you're going to be using something for continuous reading all the time, it's probably best to take it out and clean the sensor with distilled water and recalibrate every few days or a week when you're using it Getting accurate readings in distilled water like nutrient solutions or rainwater tanks can reduce readings over time, but overall I was happy

Arrived, test showed the calibration is unstable. Changes over time for an unknown reason. Make sure you calibrate when the device is at room temperature. The room temperature should be close to the normal daily temperature and increased if necessary. I tried minimizing the high-low edge and center to minimize skew. Has been connected to a backup battery with surge protection. Suspicious tolerances of internal components make the device prone to drift. I have endeavored to eliminate earth…

So far this product does exactly what it promises. I just received it yesterday and am currently using it. It says it works for long-term use and all you need to change after long-term use is the probe, so we'll see. Calibration was easy. It even had a conversion chart on the back of the solution if your distilled water wasn't 25 degrees so you didn't have to play games to get it to the right temperature, you can calibrate it at any temperature of your water. while the tempo was on an even…