GB/T 24199-2009
Refined pyridine - Determination of pyridine content - Gas chromatographic 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
T/ACIA 002-2022
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
DB44/T 1030-2012
HG/T 5167-2017
Determination of carboxylat and sulfonate polymer in circulation cooling water
GB/T 6730.44-2017e
Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthoI spectrophotometric method
GB/T 6730.44-2017
Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthol spectrophotometric method
NY/T 3037-2016
YB/T 5072-2005
GB/T 6730.37-2017
Iron ores—Determination of cobalt content—4-[(5-chloro-2-pyridyl)azo]-1,3-diamino-benzene spectrophotometric method
20232822-T-449
Animal and vegetable fats and oils—Determination of water content—Karl Fischer method (pyridine free)
HG/T 5166~5167-2017
SH/T 1499.5-1997
Pure adipic acid--Determination of content of iron--2,2'-Bipyridyl spectrophotometric method
GB/T 3711-1983
Method of determination for neutral oils and pyridine bases contents of phenol products
HG/T 5709\uff5e5712-2020
AATCC 168-2018
Chelating Agents: Active Ingredient Content of Polyaminopolycarboxylic Acids and Their Salts; Copper PAN Method