Make sure that the reagent blank vial is the same great deal number as the test vials. Observe: At the very least one reagent blank has to be operate with Each and every list of samples with Every new great deal range of COD test vials.Chemical Oxygen Demand is actually a crucial metric while in the wastewater industry and is usually documented as

four.two While a collaborative examine is a component of the guide, this information might be employed by a single laboratory for method validation when a formal collaboration examine is not useful. This information could also be used right before a full collaboration research to predict the dependability in the method..