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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

ABNT NBR 14242
Residual bath and liquid effluent - Determination of the chemical oxygen demand (COD) - Open reflux dichromatometry method

Edition 2006-03-31

Original language Portuguese

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

ABNT NBR 14242 Residual bath and liquid effluent - Determination of the chemical oxygen demand (COD) - Open reflux dichromatometry method

Want to learn more?

ABNT NBR 14242
Residual bath and liquid effluent - Determination of the chemical oxygen demand (COD) - Open reflux dichromatometry method