GB/T 44290-2024
Calculation method of biogenic carbon content in wood and wood-based products
GB/T 5511-2008
Cereals and pulses—Determination of the nitrogen content and calculation of the crude protein content—Kjeldahl method
UNE-EN 14346:2007
Characterization of waste - Calculation of dry matter by determination of dry residue or water content
NY/T 4353-2023
SN/T 4786-2017
Determination of cystine in soy sauce for export
BS 04/30116805 DC
BS EN 14346. Characterisation of waste. Calculation of dry matter by determination of dry residue and wet content
NY/T 3947-2021
Determination of selenocystine, methylselenocysteine and selenotmethionine in livestock and poultry meat by high performance liquid chromatography-atomic f1uorescence spectrometry
HG/T 5928-2021
HG/T 5927\uff5e5928-2021
YY/T 1258-2015
Homocysteine assay kit(enzymatic cycling method)
GB 1886.75-2016
GB 1903.12-2015
GB/T 12492-1990
Determination of cystine content of wool hydrolysates by colorimetry
KS M 8442-2012(2023)
L(-)-Cystine
NY/T 3556-2020
Determination of selenocysteine and selenomethionine in cereals-\r Liquid chromatography-inductively coupled plasma mass spectrometry
KS M 8442-2012(2018)
L(-)-Cystine
GB/T 1296-1992
Chemical reagent--L-Cystine
GB/T 42957-2023
Determination of lysine, methionine and threonine in commercial amino acid products and additive premixture feeds
KS K ISO 2913-2018
Wool — Colorimetric determination of cystine plus cysteine in hydrolysates
HG/T 5266-2017
Biochemical reagent-L-Cysteine hydrochloride monohydrate