Swimming Pool Water Test Kit To Test pH, Chlorine, and Bromine Level in Pool & SpaProfessional 3 way water test kit for maintaining proper Chlorine, Bromine, and pH chemical levels in swimming pools and spas. The test kit is organized in a polyethylene case. Kit includes a 1 2 ounce dropper bottle of OTO (Orthotolidine) Chlorine Test Solution and a 1 2 ounce dropper bottle of Phenol Red pH Test Solution. It also includes a clear view water testing block with an accurate measuring scale and integrated color markings for the chemical