GOST R 57135-2016 Ferroalloys. Sampling and sample preparation for chemical analysis. Part 1. Ferrochromium, ferrosilicochromium, ferrosilicon, ferrosilicomanganese, feromanganese
GOST R 50724.2-1994 Ferroalloys. Sampling and sample preparation. Terms and definitions
GOST R 54569-2011 Cast iron, steel, ferroalloys, metallic chromium and manganese. Standards of accuracy of quantitative chemical analysis
GOST R 57135-2016 history
2016GOST R 57135-2016 Ferroalloys. Sampling and sample preparation for chemical analysis. Part 1. Ferrochromium, ferrosilicochromium, ferrosilicon, ferrosilicomanganese, feromanganese