NY/T 4429-2023
HG/T 5017-2016
Determination of ethylenediamine tetraacetic acid disodium (EDTA) and copper content in chemical copper plating effluent
GB/T 4702.5-2008
Chromium metal - Determination of aluminium content - EDTA titrimetric method and flame atomic absorption spectrometric method
GB/T 4702.4-2008
Chromium metal - Determination of iron content - EDTA titrimetric method and flame atomic absorption spectrometric method
HG/T 5016~5017-2016
GB/T 6730.34-2017e
Iron ores—Determination of tin content—Pyrocatechol violet cetyl trimet hylamine bromide spectrophotometric method
GB/T 6730.34-2017
Iron ores—Determination of tin content—Pyrocatechol violet cetyl trimet hylamine bromide spectrophotometric method
DB43/T 2200-2021
YB/T 917-2017
Carbon materials—Determination of vanadium content—3,3-dimethyl naphthalene amine colorimetric method
T/SSAE 42-2023
NY/T 890-2004
Determination of available zinc,manganese,iron,copper in soil-extraction with buffered DTPA solution
GB/T 6609.18-2004
Chemical analysis methods and determination of physical performanceof alumina--Determination of sulfate content--N,N-dimethyl-P-phenylenediamine spectrophotometric method
GB/T 6609.10-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of vanadic oxide content--N-benzoyl-N-phenylhydroxylamine extraction photometric method
SN/T 1018-2001
QB/T 5833-2023
\u0413\u041e\u0421\u0422 \u0420 57571-2017
Hardeners for epoxide resins. Determination of primary, secondary and tertiary amine group nitrogen content
T/GDBX 087-2024
EN 1791:1997
BS EN 1791:1997
Surface active agents. Fatty alkyl dimethyl amine oxides. Determination of the amine oxide content
UNE-EN 1791:1997
SURFACE ACTIVE AGENTS. FATTY ALKYL DIMETHYL AMINE OXIDES. DETERMINATION OF THE AMINE OXIDE CONTENT.