Review on Revolutionize Hydroponics with KETIEE Resolution Standard Aquariums by Brandon Rogers

I have been using this KETIEE digital PH meter for over a month. I followed the calibration instructions, watched the calibration videos and couldn't get the same reading twice for the same liquid for several minutes after each test. I was about to send it back. After about a week of constantly calibrating the device and testing many liquids for pH, it seemed to settle down and be working. I'm still not sure if the readings shown are correct. Newly discovered bottled water passed the 5.1 PH test, which doesn't seem right. Purchased new calibration powers and crafted new calibration fluid. I will then test both the old and the new calibration fluid. I use KETIEE to test water, juice and wine. I strictly follow the cleaning instructions. I calibrate before every pH test. Even if I do this, I'm not sure about the results I'll see. It is not expensive.