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See Chinese contents: HJ 355-2019 HJ 355-2019: Technical specification for operation of wastewater on-line monitoring system (CODCr, NH3-N et al.)
This Standard specifies the requirements for the operating organization and personnel, parameter management and setting, sampling methods and data reporting, inspection and maintenance, operation technical and quality control, system maintenance and troubleshooting, archive records that the operating organization shall meet, so as to ensure the stable operation of on-line monitoring equipment for wastewater. It also specifies the specific content of operation comparison monitoring.
