HG/T 3454-2013
Chemical reagent-Thiourea
HG/T 3454-1999
Chemical reagent Thiourea
GB/T 42516-2023
Method for chemical analysis of high temperature shape memory alloys—Determination of platinum content—Thiourea complex precipitation method
DIN 54600-1
Testing of paper and board; testing on antimicrobial additives; determination of tetramethylthiuramdisulfid content (TMTD)
GB 10738-2007
Working chemical - General rules for assay - weight titration
GB 10737-2007
Working chemical - General rules for assay - Weight titration(potentiometric method)
GB/T 3597-2002
Fertilizer--Determination of nitrate nitrogen content--Nitron gravimetric method
GB/T 32226-2015
Specific solid enzyme (ALD, TIM, GDH)reagent for determination of fructose diphosphate (FDP)
GB/T 4702.18-2020
Chromiun metal—Determination of vanadium content—Tantalum reagent trichloromethane extraction spectrophtometry method
GB/T 4702.7-2016
Chromium metal─Determination of nitrogen content─Distillation-nessler reagent spectrophotometric method
GB/T 23773-2009
Inorganic chemicals for industrial use - General method for determination of ammonium content - Nessler's reagent colorimetric method
GB/T 4701.3-2009
Ferrotitanium - Determination of copper content - The DDTC photometric method and the flame atomic absorption spectrometric method
GB/T 223.14-2000
Methods for chemical analysis of iron,steel and alloy--The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
HB 5422.7-1989
GB/T 23772-2009
Inorganic chemicals for industrial use - General method for the determination of total nitrogen content - Nessler's reagent colorimetric method
HB 5220.19-2008
Methods for chemical analysis of superalloys-Part 19:Determination of aluminum content by cupferron,cupron separation-EDTA volumetric method
T/SSAE 33-2023
YB/T 5045-2012
Molybdenum oxide-Determination of cooper-Spectrophotometric method of neocupron
\u0413\u041e\u0421\u0422 6344-73
Reagents. Thiourea. Specifications
EJ/T 20167-2018
Determination of nitrogen in reprocessed uranium trioxide powder by distillation-nessler reagent photometric method