GB/T 5687.13-2021 Ferrochromium—Determination of chromium,silicon,manganese,titanium,vanadium,iron contents—Wavelength dispersive X-ray fluorescence spectrometry(fused cast bead method)

GB/T 4010-1994 Ferroalloys—Sampling and preparation of samples for chemical analysis GB/T 4010-2015 Ferroallys sampling and preparation of samples for chemical analysis GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results—Part 1:General principles and definitions GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results—Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values 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 16597-1996 Analytical methods of metallurgical products General rule for X-ray fluorescence spectrometric methods GB/T 16597-2019 Analytical methods of metallurgical products—General rule for X-ray fluorescence spectrometric methods GB/T 28372-2012 Ferroalloys—Sampling and preparation of samples—General rules YB/T 082-1996 Specification for CRMs for metallurgical product analysis JJG 810-1993 Wavelength Dispersive X-Ray Fluorescence Spectrometers YB/T 082-2016 Metallurgical product analysis standard sample technical specification