GB/T 622-2006
Chemical reagent - Hydrochloric acid
GB/T 33088-2016
Chemical reagent—Pararosaniline hydrochloride solution
GB/T 6685-2007
Chemical reagent - Hydroxylammonium chloride
GB/T 15896-2024
Chemical reagent—Formic acid
GB/T 625-2024
Chemical reagent—Sulfuric acid
GB/T 684-2023
Chemical reagent—Toluene
GB/T 686-2023
Chemical reagent—Acetone
GB/T 33090-2016
Chemical reagent—N-(1-naphthyl)ethylenediamine dihydrochloride
GB/T 37885-2019
Chemical reagent—Classification
GB/T 1282-2013
Chemical reagent―Phosphoric acid
GB/T 691-2012
Chemical reagent - Aniline
GB/T 620-2011
Chemical reagent - Hydrofluoric acid
GB/T 1281-2011
Chemical reagent - Bromine
GB/T 675-2011
Chemical reagent - Iodine
GB/T 628-2011
Chemical reagent - Boric acid
GB/T 33089-2016
Chemical reagent—N,N-dimethyl-p-phenylenediamine dihydrochloride
GB/T 690-2008
Chemical reagent - Benzene
GB/T 631-2007
Chemical reagent - Ammonia solution
GB/T 625-2007
Chemical reagent - Sulfuric acid
GB/T 626-2006
Chemical reagent - Nitric acid