Pentair #78DPD "All-in-One" Test Kit, Includes: Free, Total and Combined CL, PH, Acid Demand and Total Alkalinity, Lucite Test Cell, 50 Each DPD No. 1 and No. 3 Tabs, 1 Oz. No. 2, No. 3, 1/2 Oz No. 4, No. 5, Water Test Booklet, Red Display Box,