T/GRM 034-2021
GB/T 6730.37-2017
Iron ores—Determination of cobalt content—4-[(5-chloro-2-pyridyl)azo]-1,3-diamino-benzene spectrophotometric method
HJ 550-2015
HJ550-2015
HJ 550-2009
GB 1886.354-2021
GB/T 14506.26-1993
Silicate rocks—Determination of cobalt content—4-[(5-Chtoro-2-pyridyl)-azo]-1,3-diamino benzene photometric method
GB/T 6730.37-1986
Methods for chemical analysis of iron ores The 4-[(5-chloro-2-phridyl)azo]-1,3-diaminobenzene photometric method for the determination of cobalt content
HG/T 4421-2012
GB/T 15507-1995
Water quality--Determination of hydrazine--p-Dimetylaminobenzaldehyde spectrophotometric method
HG/T 6036-2022
HJ 674-2013
GB/T 33792-2017
2,4-Diaminobenzenesulfonic acid sodium salt
GB/T 14375-1993
Water quality--Determination of monomethyl hydrazine--p-Dimethylaminobenzaldehyde spectrophotometric method
HG/T 3678-2010
p-Sulfanilic acid
HG/T 5697-2020
p-Sodium sulphonate benzaldehyde
KS M 8555-2005(2023)
p-Dimethylaminobenzaldehyde
HG/T 4714-2014
KS M 8555-2005(2018)
p-Dimethylaminobenzaldehyde
HG/T 2746-2010
Sodium sulphanilate