This is a Pentair Rainbow #78HR All-in-One 4-Way Test Kit that tests for Chlorine, pH, Acid Demand, and Total Alkalinity using drop test and color comparator method. It includes a water test booklet, instructions and is housed in a blue display box. It includes a lucite test cell with wide standards. This All-in-One is a good kit residential pools.
Testing sanitation levels and pH are the most important tests for pools. The chlorine level should stay between 1.0 and 3.0 parts per million (ppm) to maintain a healthy pool. A pool’s pH levels should be maintained between 7.2 and 7.6.
