The 2-Minute Rule for chemical oxygen demand test
As soon as the two hours are finished, transform the digestor block off and permit the vials to stay within the unit for fifteen to 20 minutes to cool. Take out the vials and return them on the vial rack. CAUTION: the vials will continue to be very hot.Chemical Oxygen Demand (COD) is defined as the level of oxygen equivalents eaten while in the che