Products used for treatment of water intended for human consumption. Manganese dioxide Ingestion-build-133579 Marine speed and distance measuring

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Products used for treatment of water intended for human consumption. Manganese dioxide Ingestion-build-133579 Marine speed and distance measuring1 Scope This European Standard is applicable to manganese dioxide used for treatment of water intended for human consumption. It describes the characteristics of manganese dioxide and specifies the requirements and the corresponding test methods for manganese dioxide. It gives information on its use in water treatment. Two classes of product are specified: Class 1 with hardness greater than or equal to 6 Mohs, Class 2 with hardness less than 6 Mohs.