Research Report RR:D19-1125

    An interlaboratory study was conducted by six laboratories testing calcium samples for hardness in water to establish a precision statement for test method D1126.

    Published: June 1986

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    Related Standards

    D1126-12 Standard Test Method for Hardness in Water


    Committee D19 on Water


    Subcommittee D19.05 on Inorganic Constituents in Water