Complete drop kit for free chlorine, total chlorine, bromine, pH, and cyanuric acid using DPD color comparison with the Taylor 2000 Series comparator. Professional-grade testing for comprehensive water balance monitoring and compliance inspections. Key Features Tests free chlorine, total chlorine, total bromine, pH, and cyanuric acid DPD color comparison method using 2000 Series comparator block Chlorine range 1–10 ppm, bromine 2–20 ppm, pH 7.0–8.0, cyanuric acid 30–100 ppm Includes extra reagent bottles for extended testing capacity Saltwater compatible for all pool types Test free chlorine and pH 2-3 times weekly during swimming season. Check cyanuric acid monthly — levels above 50 ppm can reduce chlorine effectiveness. Store reagent bottles tightly capped in a cool, dry location away from direct sunlight. Requires Taylor 2000 Series comparator block (sold separately). Expired reagents produce inaccurate color comparisons.