25/1/2018 · Only the Low Range COD Digestion vials (Range of 3-150 mg/L COD) and High Range COD vials (Range of 20-1500 mg/L COD) are USEPA approved for wastewater analyses, utilizing Oxygen Demand, Chemical-Reactor Digestion COD Method 8000 ULR, LR, HR, HR plus+.
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