Pentair R151186 78HR All in One 4 Way pH and Chlorine Test Kit All-in-One 4 way pH and Chlorine test kit Includes Cl, pH, acid demand, total alkalinity, lucite test cell with wide standards, No. 1, No. 2, No. 3, 1/2 oz. No. 4, No. 5, water test booklet, blue display box Includes 1 kit per pack Measures-3/4-inch length by 1-1/4-inch height by 1-4/25-inch width