Maintaining safe pool/spa water for the public is an important responsibility. Therefore, precise test results are essential when checking the water quality of commercial pools and spas. Taylor"s 2000 Series is designed for the kind of comprehensive, routine testing performed by service technicians, public and semipublic pool operators, and other professionals. Taylor"s 2000 Series uses printed color standards to achieve a reliable and accurate color match, making frequent test comparisons even easier. FAS-DPD kits feature six different standards for pH (7.0 to 8.0). The Taylor Complete FAS-DPD Kit is the same as the Taylor Complete Text Kit, except: uses #9058 FAS-DPD comparator; The sanitizer tests are titrations to eliminate color matching problems; Bromine 1 drop = 0.5 or 1.25 ppm; Cyanuric Acid Test is not needed.