Newdy Digital PH Meter Tester for Water Quality, Food, Aquarium, Pool & Hydroponics,0.01/High Accuracy +/- 0.2 and 0.00-14.00 Measurement Range, Battery Included -Blue

This was very difficult to calibrate. I had to take the batteries out twice and attempt calibration a dozen times before getting it set. Unit zeroed itself after the third use and would not recalibrate. Almost as good as a poke in the eye with a sharp stick. Product arrived in a timely manner and looked good, too bad it just does not seem to be reliable.

I bought this to test wine. A few months ago I purchased one but once I started using it I discovered that the instructions said it was accurate to +/- 0.2 pH. For testing wine, I needed more accuracy. I search in Amazon for one that was accurate up to 0.01 pH. I found this. When I got it and opened up the package I found it was exactly the same model and manufacturer as the previous one. The packaging was a little nicer. Today I used them both to test some wine. They read the same result within .01 pH.The probllem is probably with the way these items were described.

This thing has ridiculous instructions and it hard to figure out. Dont waste your money

Failed after one use. Bought another and it failed after one use as well. Picked up a different brand and it’s going strong still. I do not recommend this particular device.

Super simple, just follow the directions! Saved my grow with tap water.

This product I am not happy. Has a sticky button, I think it's defective. Was hard to calibrate.

The product does what it says and for the price i would recommend it to anyone who has a small setup.

wouldn't calibrate, cheaply made, wasted $14