REAGENT PHENOL RED 1/2 OZ

This is a testing liquid for the measurement of pH level using the Titration (drops) method. Maintaining your hot tub at the correct pH level keeps your water clear, free of bacteria and helps extend the life of your hot tub equipment. The correct Ph Level is between 7.2 and 7.8. Phenol Red is used in chlorine and bromine test kits.