Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Is the In-Situ RDO method the only optical DO method that has ATP approval for CBOD analysis?

April 26, 2017analysis Approval ATP cbod in-situ method optical rdo

0

Posted

Is the In-Situ RDO method the only optical DO method that has ATP approval for CBOD analysis?

1 Answer

0

Posted

Yes. Until the In-Situ RDO ATP was approved on November 3, 2009, only Standard Method 5210-B for CBOD, using the Winkler titration method or a Clark-cell sensor, was EPA approved for the examination of water and wastewater. The In-Situ RDO ATP is now the only optical-based method that is EPA approved for the analysis of CBOD in wastewater to comply fully with Clean Water Act requirements. NPDES permit holders may begin monitoring with the In-Situ RDO methods after seeking approval from their regional EPA authority.