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Oct 1, 1997 · The factors that determine chemical oxygen demand (COD) in Tokyo Bay have been examined by using monthly data, taken during 1980‐89, of COD, solar radiation, SST, inorganic nitrogen, and phosphate phosphorus to clarify the factors contributing to the organic contamination of the bay water.

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93% OXYGEN SAFE FOR MEDICAL USE. USP requirements- ‘Oxygen 93 Percent’ contains not less than 90% or not more than 96% by volume, of Oxygen, the remainder consisting mostly of argon and nitrogen. Meets the requirement of identification, Odor, CO2 not more than 0.03%, and CO not more than 0.001% in gas. Hi-Tech’s Oxygen Generator System is

China certified 10mL chemical oxygen demand vials for sale A Modified Method for the Accurate Determination of Chemical Chemical oxygen demand (COD) is one of the most important indexes to assess the pollution of organic compounds in water systems [1] .

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