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See Chinese contents: HJ 609-2011 HJ 609-2011: The Technical Requirement for water Quality Automatic On-line Monitor of Chromium(VI)
This Standard specifies the performance, test method and technical requirement for water quality automatic on-line monitor of chromium (VI). This Standard applies to the production, application selection, and performance test of automatic on-line monitor of chromium compound ion (VI) in surface water, sanitary sewage and industrial waste water.
