EPA 410.4

Chemical Oxygen Demand by SemiAutomated Colorimetry

Applicability: EPA Method 410.4, “The Determination of Chemical Oxygen Demand (COD) by Semi-Automated Colorimetry,” is applicable to the analysis of COD in various water matrices, including surface water, groundwater, sewage, and industrial effluent. It’s specifically designed for semi-automated colorimetric analysis. The method is used in the US EPA’s data gathering and monitoring programs under the Clean Water Act.

Purpose: The primary purpose of Method 410.4 is to provide a standardized method for measuring COD, a key indicator of water quality.