2024 All-New pH Meter for Water - High Accuracy Digital pH Tester (0.01 Precision) with UL Certification and 3 pH Calibration Powders - Ideal for Home Water, Hydroponics, Aquariums, Pools, and More

Knowing the exact PH is half the battle. Easily adjust when you know the exact PH. For 8 bucks.

Works well. As accurate as my Taylor test kit but 10x faster so I can check pH daily with ease.Found best way to use is put a bit of water in cap and dip til it overflows and read it. In moving water the reading jumps around but in the cap it’s stable.

I bought this item on amazon Jan 17th and received it a few days later. Following the calibration instructions, the ph meter would not calibrate. I exchanged it with Amazon for a new one. Received it a few days later and this one would not calibrate either. I called Vivosun and waited 4 hours for them to call me back. The caller hung up before my wife could get me on the phone. I called them back and waited about 10 minutes to speak to another person, who stated that the meter comes fully calibrated from the manufacturer and if I was having trouble with it, I needed to buy another solution to calibrate the meter. I asked him if they could replace it and he took my email information and said it would take about 24 hours for me to get the email and someone would help me at that point. I asked to speak to his supervisor, I was placed on hold for about 5 minutes, he came back on the line and told me that his supervisor was unavailable and I would have to wait for the email. I have spent 100s of dollars with this company and this is the best they can do? I highly recommend others picked a different ph meter do to the faulty state of this device and the companies customer service just sucks.

works great for the price and purpose !!!!!

Works well and is very affordable.

It takes 30 seconds plus to register

Works great, and obviously this isn't an NIST traceable lab instrument or anything, but for the price, I'm impressed. It's basically the same thing anyway. I used the calibration salts, and it was already spot on out of the box, but the only way to know that is to do the calibration. Additional calibration salts packets are available on Amazon. For those complaining that it drifts, or that it changes measurement when you move it, that's NORMAL. pH is finicky, and actually very hard to nail down and measure, so if the pH looks like it's drifting, that's because it is. Moving your solution to a new container will swing the pH as well. In a lab setting, you would calibrate every day and preferably right before measuring, maybe even after too just to be sure, and take the sample to the meter as soon as possible with minimal manipulation. The nice thing about this is I can put it directly in my tank and get a very accurate reading. For a fish tank, it's pretty good.

Checking water purity