Swimming Pool Water Test Kit for Chlorine and PH

Professional 3-way water test kit for maintaining proper chlorine, bromine and pH chemical levels in swimming pools The kit includes a ½ ounce dropper bottle of OTO (Orthotolidine) Chlorine Test Solution and a ½ ounce dropper bottle of Phenol Red pH Test Solution Includes clear view water testing block with accurate measuring scale and integrated color markings for the chemical levels Comes with a user guide and it all stores in a polyethylene case Easy to use, just fill each test tube with pool water, add 5 drops of the proper solution into each test tube, put the test tube caps on, shake the testing block then check the chloride, bromine and pH readings