Review on 🌱 Hydroponic Household Drinking Resolution Measurement by Aaron Thawngzauk

I was hoping to find a diamond in the rough for $9 and was severely disappointed. I followed them as directed and used the calibration powders with the correct amount of distilled water. The pH meter shows PH 0.0, the calibration solutions are saved, tried to recalibrate many times but to no avail. More trouble than good, I threw this junk in the bin and used cheap indicator drops to find the pH of my solution, the pH range of ±0.5 is acceptable for my purposes; Dealing with an inferior PH meter is not. If you could calibrate it properly it would probably be fine, if not you'd throw it in the trash like I did.