GB/T 6730.85-2023 Iron ores—Preparation and certification of certified reference materials for use in chemical analysis

GB/T 6730.51-2023 Iron ores—Determination of carbon content in carbonate—Caustic asbestos absorption gravimetric method GB/T 6730.84-2023 Iron ores—Determination of total rare earth content—Inductively coupled plasma atomic emission spectrometric method GB/T 6730.86-2023 Iron ores—Determination of radionuclides—Inductively coupled plasma-mass spectrometric method GB/T 6730.87-2023 Iron ores—Determination of total iron and other multi-element content—Wavelength dispersive X-ray fluorescence spectrometry (cobalt internal standard method)

GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results—Part 1:General principles and definitions GB/T 10322.1-2000 Iron ores—Sampling and sample preparation procedures GB/T 10322.1-2014 Iron ores—Sampling and sample preparation procedures GB/T 10322.1-2023 Iron ores—Sampling and sample preparation procedures GB/T 10322.7-2004 Iron ore—Determination of size distribution by sieving GB/T 10322.7-2016 Iron ores and direct reduced iron—Determination of size distribution by sieving GB/T 15000.2-1994 Directives for the work of reference materials(2) The common terms and definitions of reference materials GB/T 15000.2-2019 Directives for the work of reference materials—Part 2:Selected terms and definitions GB/T 15000.3-1994 Directives for the work of reference materials(3) General principles and statistic methods for certification of reference materials GB/T 15000.3-2008 Directives for the work of reference materials(3)—Reference materials—General and statistical principles for certification GB/T 15000.3-2023 Directives for the work of reference materials—Part 3:Reference materials—Characterization and assessment of homogeneity and stability GB/T 20565-2006 Iron ores and direct reduced iron—Vocabulary GB/T 20565-2022 Iron ores and direct reduced iron—Vocabulary GB/T 27418-2017 Guide to the evaluation and expression of uncertainty in measurement

ISO 11459:1997