化学试剂 pH值测定通则  (GB/T 9724-2007)

Chemical reagentGeneral rule for the determination of pH

(ISO 6353-1:1982,Reagents for chemical analysisPart 1:General test methods,NEQ),代替GB/T 9724-1988

发布时间： 2007-09-26

实施时间： 2008-04-01

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