This complete DPD test kit is designed for service techs, commercial pool operators and health department officials. The kit uses 2 oz. reagents with titrants to improve accuracy, includes a printed color comparator, waterproof instructions, treatment charts, and a water proof chemistry guide. Test kit includes: 10 grams of DPD Powder x 2, 2 oz. bottles of FAS-DPD Titrating Reagent, DPD Reagent #3, Phenol Red, Acid Demand Reagent, Base Demand Reagent, Cyanuric Acid Reagent X2, Sulfuric Acid .12N, Total Alkalinity Indicator, Thiosulfate N/10, Hardness Reagent, Calcium Indicator Liquid, Calcium Buffer; 2 Chamber Comparator, Water Balance Calculator Wheel, Cyanuric Acid Testing Bottle 7 / 14 mL. Kit Measures: Free & Total Chlorine - 0.5ppm - 5.0ppm, Bromine - 1.0ppm - 10.0ppm, pH - 6.8 - 8.2, Acid Demand / Base Demand, Calcium Hardness, Total Alkalinity and Cyanuric Acid.