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ThemeetingofexaminationonGB/T15000.9Directivesfortheworkofreferencematerials9Calibrationinana-lyticalchemistryanduseofcertifiedreferencematerialswasheldbyNationalTechnicalCommitteeonReferenceMa-terialsinBeijingonDecember23,2003.ChenBainian,vicedirectorofN
ThemeetingofexaminationonGB/T15000.9Directivesfortheworkofreferencematerials9Calibrationinana-lyticalchemistry anduseofcertifiedreferencematerialswasheldbyNationalTechnicalCommittee ReferenceReferenceMa-terialsinBeijingonDecember23, 2003.ChenBainian, vicedirectorofN