Oxygen Demand, Chemical DOC316.53.0 USEPA1 Reactor Digestion Method2 Method 8000 3 to 150 mg/L COD (LR) 20 to 1500 mg/L COD (HR) TNTplus® 821/822 Scope and application: For water, wastewater; digestion is required. 1 COD ranges 3–150 mg/L and 20– 1500 mg/L COD are USEPA approved (5220 D) for wastewater analyses, Federal Register, April 21,
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