Contains 1/2 oz OTO and 1/2 oz Phenol red solutions
Tests bromine, chlorine and pH levels
Use fresh solutions at the start of each pool season
Reliable poolside testing
WARNING: This product can expose you to chemicals including 3,3'-Dimethylbenzidine (ortho-Tolidine), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65Warnings.ca.gov/