GB/T 33335-2016
high purity boron tribromide for industrial use
DB52/T 902-2014
GB/T 6730.34-2017e
Iron ores—Determination of tin content—Pyrocatechol violet cetyl trimet hylamine bromide spectrophotometric method
GB/T 6730.34-2017
Iron ores—Determination of tin content—Pyrocatechol violet cetyl trimet hylamine bromide spectrophotometric method
YS/T 520.6-2007
Chemical analysis of gallium—Part 6:Determination of tin content—The salicylfluorone cetyltrimethylammonium bromide spectrophotometric method