pH Meter for Water 4 in 1 pH EC TDS Temp Meter for Hydroponics PPM and EC Water Tester Digital pH PPM Meter for Nutrients Growing Hydroponics Gardening DWC hydroponics System

The meter itself works accurately and is easy to use for checking pH and other readings. Unfortunately the glass probe arrived broken, which was disappointing at first. That said, the company handled it exactly how they should. They replaced the probe quickly with no hassle, and the replacement has been working properly since. Calibration is straightforward and readings are stable. Good product overall, and solid customer support when something went wrong.

AAA+++

It's a completely useful and necessary product; it really speeds up my work a lot.

Was looking for a solid backup pH meter pairing with my Gravity probe and this was new to market and holding good reviews. While calibration is straight forward and user friendly, I calibrate using all three: 4, 6.86, and 9.18 ... I noticed the pH slippage soon after and by day 3, when I need to use it, the pH offset was +.7. At first, I thought, "great another Vivosun cheap-o." -- After calibrating several times in a short timeframe, I was in a rush one day and only calibrated using 6.86 and 4. After a few days, when I needed to pH again, magical it was only .02 off from my Gravity printout. Ever since then I went more than 3 weeks without the calibration process and the pH slippage as only been +.04. -- Images were taking +3 weeks after calibration. Not only does it give accurate pH level(s), but also gives temperature, EC and PPM readability. Conclusion: Although I noticed the offset/slippage in the beginning using all 3 pH solutions, this has been holding up great ever since the 6.86 & 4 calibration. This would be a great introduction investment if your looking for a quality pH meter that's quick to printout pH values within .05 range. The temperature and EC functions have been on point. The EC comes calibrated and reads 'natural values'. Not sure how long the battery with live, but with a quick backlight timer, it's a function that many would say is a negative, but I see it as a battery saver, which is a plus. Remember to store sensor in 3M solution when not in use. I recommend.

Too hard to calibrate each time don’t use it!