Why is my BOD depletion not linear?

Document ID

Document ID TE889

Published Date

Published Date 27/05/2017
Question
Why is my BOD depletion not linear?
Summary
Non-linear BOD depletion
Answer
Non-linear BOD depletion is usually caused by sampletoxicity. If it is required to perform BOD on these smples, then use the lowest possible dilutions to estimate the BOD. If toxicity is a recurring problem then you may need to switch to COD for such samples.