Solving Chloride Interference in COD Testing: A Practical Lab Guide
If your COD values look too high for the process you know, chloride is often the first place to check. In standard dichromate COD tests, chloride is oxidized along with organic matter. That extra dichromate demand shows up as falsely high COD. This is a frequent problem in saline wastewater, coastal discharges, food-plant brine streams, […]
