Wether it is drinking , tap , reverse osmosis it will all have a negative or positive ph.
Ph is a basic indicator of acic or alkaline state.
Remember in school your science class? Hmmm not so much? Well a little refresher for you.
Lemon- 2.5
Coffee-5-6.5
Milk- 6.2
Soapy water-7-10
Beer- 4.5 ( ok they probobably did not teach you this one)
Anyway many Doctors and health concerned people believe that haveing a positive ph Alkaline state in your own body will promote wellness. Do a search for Kangen water for more details. Our testers are easy to use calibrate ocassionally and just place in and you have your ph tested in seconds.