HG/T 4875~4877-2016
HG/T 4876-2016
3-Aminopyridine for industrial use
HG/T 4875-2016
2-Aminopyridine for industrial use
HG/T 4877-2016
4-Aminopyridine for industrial use
GB/T 24199-2009
Refined pyridine - Determination of pyridine content - Gas chromatographic method
HG/T 5615-2019
GB/T 6730.37-2017
Iron ores—Determination of cobalt content—4-[(5-chloro-2-pyridyl)azo]-1,3-diamino-benzene spectrophotometric method
YB/T 5072-2014
Determination of pyridine and homologues contents of curde light pyridine
GB/T 3711-2008
Method of determination for neutral oils and pyridine bases contents of phenol products
GB/T 5009.195-2003
Determination of chromium picolinate inhealth foods
GB/T 26626-2011
Animal and vegetable fats and oils - Determination of water content - Karl Fischer method (pyridine free)
YB/T 5074-2005
Determination of water content of pyridine products
FZ/T 50049-2020
Man-made Fibres—Test method for amino acid content
GB/T 27593-2011
Textile dyeing and finishing auxiliaries - Determination of free formaldehyde content of amino resin agent
GB/T 5195.19-2018
Fluorspar—Determination of arsenic content—Silver diethyldithiocarbamate spectrometric method
HG/T 5612\uff5e5615-2019
HJ 550-2015
HJ550-2015
NY/T 1975-2010
GB/T 6730.44-2017e
Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthoI spectrophotometric method