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Factor & Method: Phosphate: Ascorbic acid or stannous chloride reduction after forming molybdate complex yields a blue color. Comparator Vanadate molybdate method yields yellow color. All kits determine orthophosphate concentrations. The ascorbic acid method must be used when testing salt water
Test system: Vanadate molybdate octet comparator
Range/Sensitivity: 10, 20, 30, 40, 50, 60, 70, 80 ppm
# of Tests (# of reagent): 50 (1)
