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See Chinese contents: HJ 377-2019 HJ 377-2019: Technical specifications and test procedures for water quality on-line automatic monitoring equipment of chemical oxygen demand (CODCr)
This Standard specifies technical specifications, performance indicators and test procedures for water quality on-line automatic monitoring equipment of chemical oxygen demand (CODCr). This Standard is applicable to guide production design, guide application type selection and conduction of performance inspection of water quality on-line automatic monitoring equipment of chemical oxygen demand (CODCr) for surface water, domestic sewage and industrial wastewater.
