Sonkir pH Meter, Digital pH Tester/Water Quality Tester for Drinking Water, Swimming Pools, Aquariums, Hydroponics, ATC Function, 0.1 Accuracy, Backlit LCD Display, Allows me to insatantly test the Ph balance in the water I drink or in the pool and Jacuzzi I'm swimming in. this small handheld unit is easy to use and easy to read. The backlight display makes it nice to be able to check the water in my Hot Tub before we get in it at night... great buy! https://www.amazon.com/Sonkir-Drinking-Swimming-Aquariums-Hydroponics/dp/B07DWNH62W #rankbooster, #sponsor, #Sonkir, #Masters