Chemical Oxygen Demand

A comparative study of the performance of Reagecon COD vials
and Hach COD vials using the Hach DR/2010 photometer

Authors: John J. Barron, Colin Ashton & Leo Geary - Technical Services Department, Reagecon Diagnostics Ltd., Shannon Free Zone, County Clare, Ireland


This paper describes a comparative study on the performance of the Reagecon and Hach COD vials when used in conjunction with the Hach DR/2010 photometer. The results show that the Reagecon vials give comparable results to the Hach vials in terms of accuracy and repeatability for both COD standards and effluent samples. Therefore the Reagecon COD vials can be used with confidence with the Hach DR/2010 photometer. As the single range of Hach COD vials are designed for use on the entire range of Hach spectrophotometers, the Reagecon COD vials can equally be used on the full range of Hach spectrophotometers

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