As far as I know, they only make 1 pH strip that is for human salvia and urine, so what ever brand you buy, it must say for human use.....there are 40+ varieties of pH testing papers and they don't work for human testing. We have always sold the roll type for $8.95.

Everyone is acidic, the more a person fast, the more acids are expelled and the better the alkalinity of the body fluids.

MH