Review on RCYAGO Portable Measurement Household Drinking by Mark Walsh

Dude, I was pissed off the first time I wet the probe! The performance was damn patchy. It didn't stand up to reading and was all over the map. I went through the literature to find errors, but it was extremely weak in content and English (the headline read: ORP Merer, which should be "Changlish" for meters because it's from China!) produced a watered-down stream of useless ones Left. Then I remembered I actually had some common sense I applied and lo and behold when I took the batteries out (both were slightly rusted) and rubbed isopropyl on them, they were stable on the ORP train, now they repair quickly with it accurate readings. I wanted a cheap and reproducible device. After taking care of the batteries, I got this! So 5 out of 5.