GB/T 6730.77-2019 Iron ores—Determination of arsenic content—Hydride generation-atomic fluorescence spectrometric method

GB/T 6730.55-2019 Iron ores—Determination of tin content—Flame atomic absorption spectrometric method GB/T 6730.56-2019 Iron ores—Determination of aluminum content—Flame atomic absorption spectrometric method GB/T 6730.78-2019 Iron ores—Determination of cadmium content—Graphite furnace atomic absorption spectrophotometric method GB/T 6730.79-2019 Iron ores—Determination of cadmium content—Hydride generation-atomic fluorescence spectrometric method GB/T 6730.80-2019 Iron ores—Determination of mercury content—Cold atomic absorption spectrometric method

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 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 6730.1-1986 Methods for chemical analysis of iron ores—Preparation of predried test samples for chemical analysis GB/T 6730.1-2016 Iron ores—Preparation of predried test samples for chemical analysis 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 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 12806-1991 Laboratory glassware—One-mark volumetric flasks GB/T 12806-2011 Laboratory glassware—One-mark volumetric flasks GB/T 12807-1991 Laboratory glassware—Graduated pipettes GB/T 12807-2021 Laboratory glassware—Graduated pipettes GB/T 12808-1991 Laboratory glassware—One-mark pipettes GB/T 12808-2015 Laboratory glassware—One mark pipettes GB/T 21191-2007 Atomic fluorescence spectrometer