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| The differences between old and new verification regulation of On-line Automatic Determinators of Chemical Oxygen Demand(COD) |
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Abstract It was compared from the metrological performance requirements, verification method, condition, identification items, verification equipment and technical parameter for verification about the difference between On-line Automatic Determinators of Chemical Oxygen Demand(COD) JJG1012-2006 and JJG1012-2019, and the reason of changes was given. It had a detailed interpretation of the new regulation. Compared with the old verification regulation, the new regulation was more suitable for requirements of metrological verification.
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Received: 05 February 2021
Published: 02 August 2021
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2021, Vol. 31 