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When measuring crude protein

When measuring crude protein, Total:316 items.

In the international standard classification, When measuring crude protein involves: Processes in the food industry, Edible oils and fats. Oilseeds, Animal feeding stuffs, Farming and forestry, Food products in general, Fruits. Vegetables, Cereals, pulses and derived products, Meat, meat products and other animal produce, General methods of tests and analysis for food products, Milk and milk products, Microbiology, Tobacco, tobacco products and related equipment, Products of the textile industry, Textile fibres, Biology. Botany. Zoology, Energy and heat transfer engineering in general, Rubber and plastics products, Water quality, Tea. Coffee. Cocoa, Raw materials for rubber and plastics.

RO-ASRO, When measuring crude protein

STAS 21/6-1973 OILSEED RESIDUES Determination of protein of protein brut content
STAS 9597/3-1974 COMBINED FORAGES Determination of rough protein content
STAS 2213/17-1976 SWEETS Determination of total proteinic content and milk proteinic substance content
STAS 6182/44-1977 WIN E Determination of proteins
STAS SR 13325-1995 Animal feeding stuffs - Determination of total nitrogen content and calculation of crude protein content
STAS 6356-1976 MILK AND MILK PRODUCTS Proteic substances determinat ion
STAS SR 4895-6-1997 Tobacco and tobacco prodocts Determination of total proteins content (albumines)
STAS 6514-1975 FISH AND FISH PRODUCTS Determination of total proteic matters
SR ISO 5549:1996 Caseins and caseinates - Determination of protein content (Reference method)
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method

Korean Agency for Technology and Standards (KATS), When measuring crude protein

KS H 1204-2012 Testing method for crude proteins content
KS H 1204-2001 Testing method for crude proteins content
KS H 1204-2021 Testing method for crude proteins content
KS H ISO 5549:2006 Caseins and caseinates－Determination of protein content(Reference method)
KS H ISO 5549-2006(2016) Caseins and caseinates－Determination of protein content(Reference method)
KS H ISO 5549:2021 Caseins and caseinates — Determination of protein content(Reference method)
KS H ISO 5739:2006 Caseins and caseinates－Determination of scorched particles content
KS H ISO 5542:2006 Milk－Determination of protein content－Amido black dye-binding method(Rountine method)
KS K ISO 20418-1:2022 Textiles — Qualitative and quantitative proteomic analysis of some animal hair fibres — Part 1: Peptide detection using LC-ESI-MS with protein reduction
KS H ISO 5542:2021 Milk — Determination of protein content — Amido black dye-binding method(Rountine method)
KS H ISO 5542-2006(2016) Milk－Determination of protein content－Amido black dye-binding method(Rountine method)

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, When measuring crude protein

GB/T 14489.2-1993 Method for determination of crude protein oilseed
GB/T 5511-1985 Inspection of grain and oilseeds--Methods for determination of crude protein
GB/T 15673-1995 Method for determination of crude protein in edible fungi
GB/T 8856-1988 Method for determination of crude protein in fruit and vegetable products
GB/T 14489.2-2008 Inspection of grain and oils.Determination of crude protein in oilseeds
GB/T 6432-1994 Method for the determination of crude protein in feedstuffs
GB/T 18868-2002 Method for determination of moisture,crude protein,crude fat,crude fibre,lysine and methinione in feeds--Near infrared reflectance spectroscopy
GB/T 24870-2010 Inspection of grain and oils-Crude protein and crude fat determination in soybean-Near-infrared method
GB/T 15673-2009 Determination of crude protein in edible mushroom
GB/T 24897-2010 Inspection of grain and oils-Crude protein determination in rice-Near-infrared method
GB/T 24899-2010 Inspection of grain and oils-Determination of crude protein in wheat-Near-infrared method
GB/T 24901-2010 Inspection of grain and oils-Determination of crude protein in maize-Near-infrared method
GB/T 24871-2010 Inspection of grain and oils-Crude protein determination in wheat flour-Near-infrared method
GB/T 5009.5-2003 Determination of protein in foods
GB/T 5511-2008 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method
GB/T 17811-1999 Determination of digestibility in animal protein feeds--Pepsin method
GB/T 14771-1993 Method for determination of protein content in foods
GB/T 17811-2008 Determination of pepsin digestibility in animal protein feeds.Filtration method
GB/T 24318-2009 Determination of total nitrogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation of the crude protein content
GB/T 31578-2015 Inspection of grain and oils.Determination of crude protein content in grain and its products.Combustion method according to the Dumas principle
GB/T 5413.1-1997 Milk powder and formula foods for infant and young children--Determination of protein
GB/T 21318-2009 Determination of total nirogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation o the crude protein content
GB/T 42699.2-2023 Qualitative and Quantitative Analysis of the Proteome of Certain Animal Hair Fibers in Textiles Part 2: Peptide Analysis of Reduced Proteins Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF-MS) Method
GB/T 21870-2008 Medical gloves made from natural rubber latex.Determination of water-extractable protein using the modified lowry method

KR-KS, When measuring crude protein

KS H 1204-2022 Testing method for crude proteins content
KS H ISO 5549-2021 Caseins and caseinates — Determination of protein content(Reference method)
KS K ISO 20418-1-2022 Textiles — Qualitative and quantitative proteomic analysis of some animal hair fibres — Part 1: Peptide detection using LC-ESI-MS with protein reduction
KS H ISO 5542-2021 Milk — Determination of protein content — Amido black dye-binding method(Rountine method)

Taiwan Provincial Standard of the People's Republic of China, When measuring crude protein

CNS 2770-5-1986 Method of Test for Feeds : Determination of Crude Protein
CNS 2770.5-1986 Method of Test for Feeds : Determination of Crude Protein
CNS 6511-2008 Method of test for meat and meat products - Determination of crude protein content
CNS 3449-2007 Method of test for milk and milk products - Determination of protein

农业农村部, When measuring crude protein

NY/T 3493-2019 Crude protein determination of agricultural biomass raw materials
NY/T 3298-2018 Determination of crude protein in vegetable oils by near-infrared spectroscopy

CU-NC, When measuring crude protein

NC 74-28-1985 Cattle-Raising. Animal Feeding. Determination of Rough Protein
NC 86-05-1984 Cereals. Flours Determination of Protein
NC 82-12-1985 Fermentation Industry. "Torulaw Dried Fodder Yeast. GrossProtein Determination

Professional Standard - Agriculture, When measuring crude protein

ZB X 66026-1987 Total Nitrogen and Crude Protein Determination
GB 8856-1988 Method for Determination of Crude Protein in Fruit and Vegetable Products
NY/T 2007-2011 Determination of the crude protein content in cereal and pules seeds by combustion according to the dumas principle
NY/T 3-1982 Method for determination of crude protein in cereals and beans seeds(Semi-micro kjeldahl method)
GB 2905-1982 Determination of crude protein in cereal and bean crop seeds (semi-micro Kjeldahl method)
176药典三部-2010 Appendix Ⅵ ⅥB protein assay
GB/T 5009.5-1985 Determination method of protein in food
220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method
2330药典二部-2010 Appendix VII M Determination of protein content
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content
111药典四部-2015 0700 Other Determination Methods 0731 Determination of Protein Content
201药典三部-2015 Content Determination Method 0731 General Principles of Protein Content Determination Method 50
水产品质量安全检验手册 9.1.5.0-2005 Chapter IX Fishing Feed Inspection Section 1 Basic Method for Fishing Feed Testing 5. Rapid Determination of Moisture, Crude Protein, Crude Fiber, Crude Fat, Lysine and Methionine in Fishing Feed--Near Infrared Spectroscopy (GBT 18868- 2002)
292药典三部-2020 Bioassay 3412 Determination of Escherichia coli protein residues
293药典三部-2020 Bioassay 3413 Determination of protein residues in Pseudomonas bacteria
NY/T 1678-2008 Determination of protein in milk and dairy products biuret spectrophotometry method
651药典第一增补本-2010 Part Two Revised Appendix Appendix VII M Determination of Protein Content
248药典四部-2015 3400 Bioassay 3412 Determination of Escherichia coli protein residues
249药典四部-2015 3400 Bioassay 3413 Determination of Pseudomonas bacterial protein residues
294药典三部-2020 Bioassay 3414 Determination of Protein Residue in Yeast Engineering Bacteria
241药典四部-2020 3400 Bioassay 3412 Determination of Escherichia coli protein residues
242药典四部-2020 3400 Bioassay 3413 Determination of Pseudomonas bacterial protein residues
245药典三部-2020 Content Determination Method 3124 Human Granulocyte Stimulating Factor Protein Content Determination Method
GB/T 22260-2023 Determination of Anabolic Hormones in Feed by Liquid Chromatography-Tandem Mass Spectrometry
226药典三部-2010 Appendix IX IXD Determination of protein residues in Pseudomonas bacteria
225药典三部-2010 Appendix IX IXC Determination of Escherichia coli protein residues
250药典四部-2015 3400 Biological Assay 3414 Determination of Protein Residue in Yeast Engineering Bacteria
243药典四部-2020 3400 Biological Assay 3414 Determination of Protein Residue in Yeast Engineering Bacteria
268药典三部-2015 Bioassay 3413 Pseudomonas bacterial protein residue determination method 112
267药典三部-2015 Bioassay 3412 Escherichia coli bacterial protein residue determination method 111
227药典三部-2010 Appendix IX IXE Method for Determination of Protein Residue in Yeast Engineering Bacteria
269药典三部-2015 Bioassay 3414 Yeast Engineering Bacteria Protein Residual Determination Method 113
218药典四部-2015 3100 Content Determination 3124 Recombinant Human Granulocyte Stimulating Factor Protein Content Determination
206药典四部-2020 3100 Content Determination 3124 Recombinant Human Granulocyte Stimulating Factor Protein Content Determination

International Organization for Standardization (ISO), When measuring crude protein

ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
ISO 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
ISO 5983:1979 Animal feeding stuffs; Determination of nitrogen content and calculation of crude protein content
ISO 8968-4:2016 | IDF 20-4:2016 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
ISO 5739:2003|IDF 107:2003 Determination of casein and caseinate coke particles and foreign matter content
ISO 20483:2013 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method
ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
ISO/TS 17837:2008 | IDF/RM 25: 2008 Processed cheese products — Determination of nitrogen content and crude protein calculation — Kjeldahl method
ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
ISO 15323:2002 Dried milk protein products - Determination of nitrogen solubility index
ISO 15323:2002|IDF173:2002 Determination of nitrogen solubility rate of milk powder protein products
ISO 5983-2:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method
ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
ISO 8968-5:2001|IDF 20-5:2001 Determination of milk nitrogen content Part 5: Determination of protein nitrogen content
ISO 8968-4:2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content
ISO 8968-5:2001 | IDF 20-5:2001 Milk — Determination of nitrogen content — Part 5: Determination of protein-nitrogen content
ISO 8968-4:2001|IDF 20-4:2001 Determination of milk nitrogen content Part 4: Determination of non-protein nitrogen content
ISO 8968-1:2014 | IDF 20-1:2014 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
ISO 5542:1984 Milk; Determination of protein content; Amido black dye-binding method (Routine method)
ISO 14244:2014 Oilseed meals - Determination of soluble proteins in potassium hydroxide solution
ISO 5983-1:2005/cor 1:2008 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method; Technical Corrigendum 1
ISO/TS 17837:2008 Processed cheese products - Determination of nitrogen content and crude protein calculation - Kjeldahl method
ISO/TS 17837:2008|IDF/RM 25:2008 Determination of nitrogen content and calculation of crude protein content in milk and milk products Kjeldahl method
ISO 20418-1:2018 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 1: Peptide detection using LC-ESI-MS with protein reduction
ISO 20418-3:2020 Textiles — Qualitative and quantitative proteomic analysis of some animal hair fibres — Part 3: Peptide detection using LC-MS without protein reduction

Hainan Provincial Standard of the People's Republic of China, When measuring crude protein

DB46/T 313-2015 Coconut Crude Protein and Crude Fat Determination

Association of Official Analytical Chemists (AOAC), When measuring crude protein

AOAC 981.10 AOAC Official Method 981.10 Crude Protein in Meat Block Digestion Method First Action 1981 Final Action 1983

RU-GOST R, When measuring crude protein

GOST 13496.4-1993 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
GOST 13496.4-1984 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
GOST 10846-1991 Grain and products of its processing. Method for determination of protein
GOST 25179-1990 Milk. Methods for determination of protein
GOST 25179-2014 Milk and milk products. Method for determination of protein
GOST 20264.2-1988 Enzyme preparations. Methods for determination of proteolytic activity
GOST 25011-1981 Meat and meat products. Methods of protein determination
GOST 25011-2017 Meat and meat products. Protein determination methods
GOST R 51417-1999 Feeds, mixed feeds and raw material. Determination of mass fraction of nitrogen and calculation of mass fraction of crude protein. Kjeldahl method
GOST ISO/TS 17837-2013 Processed cheese products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
GOST R 50466-1993 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST R 51466-1999 Caseins. Method for determination of "fixed ash" mass fraction
GOST 13979.3-1968 Oilcakes oil-meals. Methods of determination of soluble proteins
GOST R 57543-2017 Feedstuffs, compound feeds, feed raw materials. Method for determination of crude protein, crude fiber, crude fat and moisture using spectroscopy in the near-in-infrared region measurement mode transmission spectra
GOST R 54662-2011 Cheeses and processed cheeses. Determination of protein mass fraction by the Kjeldahl method
GOST 32044.1-2012 Feeds, mixed feeds and raw material. Determination of mass fraction of nitrogen and calculation of mass fraction of crude protein. Part 1. Kjeldahl method
GOST R 50817-1995 Fodder, mixed fodder and animal feed raw staff. Spectroscopia in near infra-red region method for determination of crude protein, crude fibre, crude fat and moisture
GOST 28074-1989 Vegetable fodder. Method for the determination of crude protein solubility
GOST 28075-1989 Vegetable fodder. Method for the determination of crude protein splitting
GOST R 54478-2011 Grain. Methods of determination quantity and quality of gluten in wheat
GOST 32040-2012 Fodder, mixed and animal feed raw stuff. Spectroscopy in near infra-red region method for determination of crude protein, crude fibre, crude fat and moisture
GOST R 53951-2010 Milk and milk-containing products. Determination of mass part of protein by Kjeldahl method
GOST ISO 5983-2-2016 Feeds, compound feeds, feed raw materials. Determination of mass fraction of nitrogen and calculation of mass fraction of crude protein. Part 2. Block digestion and steam distillation method
GOST R ISO 16634-1-2011 Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content. Part 1. Oilseeds and animal feeding stuffs

GOSTR, When measuring crude protein

GOST 13496.4-2019 Fodder, мixed fodder and raw mixed fodder. Methods of nitrogen and crude protein determination
GOST 34551-2019 Сonfectionery. Method for determination of mass fraction of protein
GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method
GOST 34536-2019 Milk and milk products. Determination of mass fraction of whey proteins by Kjeldahl method

Association Francaise de Normalisation, When measuring crude protein

NF V18-100:1977 Animal feeding stuffs.determination of nitrogen for the calcultion of crude protein content.
NF V04-387:1985 Caseins and caseinates. Determination of protein content (reference method).
NF EN ISO 8968-4:2016 Lait et produits laitiers - Détermination de la teneur en azote - Partie 4 : détermination de la teneur en azote protéique et non protéique et calcul de la teneur en protéines vraies (Méthode de référence)
NF V03-750*NF EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
NF V04-221-4*NF EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4 : determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
NF V03-750:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method.
NF V18-100-2*NF EN ISO 5983-2:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2 : block digestion and steam distillation method.
NF V18-100-1*NF EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1 : Kjeldahl method
NF V03-944:2021 Graines protéagineuses - Pois, fèves et féveroles - Détermination des impuretés
NF V18-100-2:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2 : block digestion/steam distillation method.
NF EN ISO 20483:2014 Céréales et légumineuses - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Méthode de Kjeldahl
NF EN ISO 20418-1:2018 Textiles - Analyse protéomique qualitative et quantitative de certaines fibres animales - Partie 1 : détection des peptides par LC ESI MS avec réduction protéique
NF EN ISO 20418-3:2020 Textiles - Analyse protéomique qualitative et quantitative de certaines fibres animales - Partie 3 : détection des peptides par LC-MS sans réduction protéique
NF V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-nitrogen content.
NF EN ISO 5983-1:2005 Aliments des animaux - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Partie 1 : méthode Kjeldahl
NF V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF V03-950*NF EN ISO 14244:2016 Oilseed meals - Determination of soluble proteins in potassium hydroxide solution
NF EN ISO 8968-1:2014 Lait et produits laitiers - Détermination de la teneur en azote - Partie 1 : méthode Kjeldahl et calcul de la teneur en protéines brutes
NF G06-007-3*NF EN ISO 20418-3:2020 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 3 : peptide detection using LC-MS without protein reduction
NF V04-221-1*NF EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1 : Kjeldahl principle and crude protein calculation
NF V04-216:1985 Milk. Determination of protein content. Amido black dye-binding method (routine method).
NF G06-007-1*NF EN ISO 20418-1:2018 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 1 : peptide detection using LC-ESI-MS with protein reduction
NF V04-216:2011 Milk - Determination of protein content - Amido black dye-binding method (routine method).
NF EN ISO 14244:2016 Tourteaux de graines oléagineuses - Détermination de la teneur en protéines solubles en solution d'hydroxyde de potassium
NF ISO 23893-3:2013 Qualité de l'eau - Mesurages biochimiques et physiologiques sur poisson - Partie 3 : dosage de la vitellogénine

NL-NEN, When measuring crude protein

NEN 3145-1966 Feeding stuffs. Methodsof analysis. Determination of crude protein
NEN 3760-1984 Cheese - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content
NEN 3198-1984 Milk, evaporated milk and dried milk - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content (reference method)

国家市场监督管理总局、中国国家标准化管理委员会, When measuring crude protein

GB/T 6432-2018 Determination of crude protein in feeds—Kjeldahl method
GB/T 41366-2022 Livestock and poultry meat quality testing—Determination of moisture, protein and fat—Near-infrared spectroscopy method
GB/T 38163-2019 Determination of allergenic protein—LC-MS/MS method

AT-ON, When measuring crude protein

ONORM DIN 10454-1993 Determination of protein content of caseins and caseinates - Reference method
ONORM DIN 10334-1994 Determination of nitrogen content of milk according to Kjeldahl and calculation of crude protein content

Hebei Provincial Standard of the People's Republic of China, When measuring crude protein

DB13/T 1098-2009 Determination of protein in feed
DB13/T 812-2006 Determination of protein solubility of soybean and its products

Lithuanian Standards Office , When measuring crude protein

LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)
LST EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)
LST EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
LST EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014)
LST EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)

CZ-CSN, When measuring crude protein

CSN 46 1011 Cast.18-1988 Testing of cereals, legumes and oil-bea-ring crops. Cereal testing. Crude protein determination.
CSN 570111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 46 7092-4-1998 Testing methods for feeding stuffs - Part 4: Determination of crude protein content
CSN 56 0186 Cast.12-1981 Testing methods for beer. art 12. etermination of proteins
CSN 57 0105 Cast.5-1984 Powdered and condensed milk products. Testing methods. Determination of protein content
CSN 46 7092-27-1998 Testing methods for feeding stuffs - Part 27: Determination of the protein content
CSN 57 0153-1986 Testing methods for meat products and sterilized food in preserves. Determination of protein content according to Kjeldahl

Tianjin Provincial Standard of the People's Republic of China, When measuring crude protein

DB12/T 347-2007 Near-infrared rapid detection method of crude protein content in wheat and corn

British Standards Institution (BSI), When measuring crude protein

BS EN ISO 8968-4:2016 Milk and milk products. Determination of nitrogen content. Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
BS EN ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
BS ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
BS EN ISO 20483:2013 Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl method
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Determination of protein-nitrogen content
BS EN ISO 8968-4:2002 Milk. Determination of nitrogen content. Determination of non-protein nitrogen content
BS EN ISO 8968-1:2014 Milk and milk products. Determination of nitrogen content. Kjeldahl principle and crude protein calculation
BS ISO 15323:2002 Dried milk protein products. Determination of nitrogen solubility index
BS EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
BS EN ISO 20418-1:2018 Textiles. Qualitative and quantitative proteomic analysis of some animal hair fibres - Peptide detection using LC-ESI-MS with protein reduction
BS EN ISO 20418-3:2020 Textiles. Qualitative and quantitative proteomic analysis of some animal hair fibres - Peptide detection using LC-MS without protein reduction
BS EN ISO 14244:2016 Oilseed meals. Determination of soluble proteins in potassium hydroxide solution
BS ISO 23893-3:2013 Water quality. Biochemical and physiological measurements on fish. Determination of vitellogenin
BS EN 15948:2012 Cereals. Determination of moisture and protein. Method using Near-Infrared- Spectroscopy in whole kernels
BS EN 15948:2015 Cereals. Determination of moisture and protein. Method using Near-Infrared-Spectroscopy in whole kernels

German Institute for Standardization, When measuring crude protein

DIN 10464:1994 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus method
DIN EN ISO 8968-4:2016-09 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016); German version EN ISO 8968-4:2016
DIN 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN 10470:2011 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN 10470:1999 Determination of whey protein content and casein content in total protein of milk and milk products - Derivative spectroscopic method
DIN EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); English version of DIN EN ISO 5983-1
DIN EN ISO 5983-2:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method (ISO 5983-2:2005); German version EN ISO 5983-2:2005
DIN EN ISO 20483:2014-03 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013); German version EN ISO 20483:2013
DIN EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016); German version EN ISO 8968-4:2016
DIN EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of the non-protein-nitrogen content (ISO 8968-4:2001); German version EN ISO 8968-4:2001
DIN EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001); German version EN ISO 8968-5:2001
DIN EN ISO 8968-1:2014-06 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014); German version EN ISO 8968-1:2014
DIN EN ISO 5983-1:2005-10 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005
DIN EN ISO 5983-1 Berichtigung 1:2009-07 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005, Corrigendum to DIN EN ISO 5983-1:2005-10; German version EN ISO 5983-1:20...
DIN 10454:1983 Determination of protein content of caseins and caseinates; reference method
DIN EN ISO 14244:2016-10 Oilseed meals - Determination of soluble proteins in potassium hydroxide solution (ISO 14244:2014); German version EN ISO 14244:2016
DIN EN ISO 20418-3:2020-11 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 3: Peptide detection using LC-MS without protein reduction (ISO 20418-3:2020); German version EN ISO 20418-3:2020
DIN EN ISO 20418-1:2018-08 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 1: Peptide detection using LC-ESI-MS with protein reduction (ISO 20418-1:2018); German version EN ISO 20418-1:2018

ES-AENOR, When measuring crude protein

AENOR, When measuring crude protein

UNE 64012:1970 MIXED FEEDS AND RAW MATERIALS. QUANTITATIVE DETERMINATION OF RAW PROTEIN. MACROMETHOD.
UNE 34871:1986 PROCESSED CHEESE PRODUCTS. DETERMINATION OF THE PROTEIN CONTENT.
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE-EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013)
UNE-EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014)
UNE-EN ISO 5983-1:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)

Standard Association of Australia （SAA）, When measuring crude protein

AS ISO 8968.4:2021 Milk and milk products — Determination of nitrogen content, Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
AS ISO 8968.1:2021 Milk and milk products — Determination of nitrogen content, Part 1: Kjeldahl principle and crude protein calculation

未注明发布机构, When measuring crude protein

BS EN ISO 8968-4:2016(2017) Milk and milk products — Determination of nitrogen content Part 4 : Determination of protein and non - protein nitrogen content and true protein content calculation (Reference method)
BS EN ISO 5983-1:2005(2009) Animal feeding stuffs — Determination of nitrogen content and calculation of crude protein content — Part 1 : Kjeldahl method

ES-UNE, When measuring crude protein

UNE-EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016)
UNE-EN ISO 5983-1:2007/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)
UNE-EN ISO 20418-1:2019 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 1: Peptide detection using LC-ESI-MS with protein reduction (ISO 20418-1:2018)
UNE-EN ISO 20418-3:2021 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 3: Peptide detection using LC-MS without protein reduction (ISO 20418-3:2020)

Group Standards of the People's Republic of China, When measuring crude protein

T/HXCY 006-2021 Determination of Crude Protein in Reed Canary Grass on Qinghai-Tibet Plateau by Near Infrared Method
T/HXCY 005-2021 Determination of Crude Protein in Siberian wildrye on Qinghai-Tibet Plateau by Near Infrared Method
T/ZJBX 10-2021 Determination of the proportion of protein hydrolysates with relative molecular weight less than 1000u in protein feed
T/HXCY 022-2021 Operating Procedure for Determination of Crude Protein Content of Paper Mulberry Silage by Near-Infrared Spectrum（NIRS）Technology

European Committee for Standardization (CEN), When measuring crude protein

EN ISO 20483:2013 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
EN ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
EN ISO 5983-2:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method
EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
EN ISO 5983-1:2005/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)
EN ISO 20418-1:2018 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 1: Peptide detection using LC-ESI-MS with protein reduction
EN ISO 20418-3:2020 Textiles - Qualitative and quantitative proteomic analysis of some animal hair fibres - Part 3: Peptide detection using LC-MS without protein reduction (ISO 20418-3:2020)
EN ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
EN 15948:2015 Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels

Liaoning Provincial Standard of the People's Republic of China, When measuring crude protein

DB21/T 2048-2012 Determination of crude protein, crude fat, crude fiber, moisture, calcium, total phosphorus, crude ash, water-soluble chloride, amino acid in feed by near-infrared spectroscopy

Danish Standards Foundation, When measuring crude protein

DS 2253:1983 Water quality. Determination of aerobic proteclytic bacteria at 30 centigrades
DS/ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
DS/EN ISO 5983-1/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN 15948:2020 Cereals – Determination of moisture and protein – Method using Near-Infrared Spectroscopy in whole kernels
DS/ISO 23893-3:2013 Water quality - Biochemical and physiological measurements on fish - Part 3: Determination of vitellogenin

IN-BIS, When measuring crude protein

International Dairy Federation (IDF), When measuring crude protein

IDF 107-2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
IDF 20-5-2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
IDF 20-1-2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
IDF 20-4-2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content

VN-TCVN, When measuring crude protein

TCVN 5461-1991 Synthetic detergents.Determination of proteinous activity
TCVN 4328-1-2007 Animal feeding stuffs.Determination of nitrogen content and calculation of crude protein content.Part 1: Kjeldahl method
TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 7253-2003 Tobacco and tobacco products.Determination of nitrogen protein content
TCVN 4328-2-2011 Animal feeding stuffs.Determination of nitrogen content and calculation of crude protein content.Part 2: Block digestion and steam distillation method
TCVN 8766-2011 Milk and milk products.Determination of protein content.Acid orange 12 dye-binding method
TCVN 7774-2007 Milk.Determination of protein content.Amido black dye-binding method (Routine method)

AR-IRAM, When measuring crude protein

IRAM 15 707-1963

PL-PKN, When measuring crude protein

PN C04288-14-1987 Technical fats Methods of testing Determination of protein content
PN P04901-1987 Determination of keratin matters solubility in reagents for chemical damage characterictic
PN-EN 15948-2021-03 E Cereals -- Determination of moisture and protein -- Method using Near-Infrared Spectroscopy in whole kernels

TH-TISI, When measuring crude protein

TIS 2255.1-2005 Animal feeding stuff s-determination of nitrogen content and calculation of crude protein content.part 1: kjeldahl method
TIS 2255.2-2005 Animal feeding stuffs-determination of nitrogen content and calculation of crude protein content.part 2: block digestion/steam distillation method

PT-IPQ, When measuring crude protein

NP 1986-1991 Milks Determination of protein content. Kjeldahl technique

CEN - European Committee for Standardization, When measuring crude protein

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content
EN ISO 5983-2:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method
EN ISO 8968-1:2001 Milk - Determination of Nitrogen Content - Part 1: Kjeldahl Method

Jilin Provincial Standard of the People's Republic of China, When measuring crude protein

DB22/T 1818-2013 Determination of urea-formaldehyde polymer in protein feed

YU-JUS, When measuring crude protein

JUS E.B8.034-1978 Specification of wheat for milling industry. Determination of raw protein content macro-micro method according to Kjeldahl

HU-MSZT, When measuring crude protein

BG-BDS, When measuring crude protein

BGC ISO 5983:2001 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会, When measuring crude protein

GB/T 35809-2018 Method for analysis of forestry biomass—Determination of protein content

Professional Standard - Tobacco, When measuring crude protein

YC/T 166-2003 Tobacco and tobacco products-Determination of total proteins content (Albumins)
YC/T 249-2008 Tobacco and tobacco products.Determination of protein.Continuous flow method

Inner Mongolia Provincial Standard of the People's Republic of China, When measuring crude protein

DB15/T 2601-2022 Rapid determination of crude protein, crude fiber, acid detergent fiber, neutral detergent fiber and acid detergent lignin in Leymus chinensis by near infrared spectroscopy
DB15/T 2600-2022 Rapid determination of crude protein, crude fiber, acid detergent fiber, neutral detergent fiber and acid detergent lignin in alfalfa using near infrared spectroscopy

Professional Standard - Commodity Inspection, When measuring crude protein

SN/T 3926-2014 Determination of protein content in dairy foods, egg foods and soy foods for export.Coomassie brilliant blue method
SN/T 1819-2006 Determination of latex protein in medical gloves for import and export.Modified Lowry method

National Health Commission of the People's Republic of China, When measuring crude protein

GB 5009.5-2010 National food safety standard Determination of Protein in foods
GB 5009.5-2016 National food safety standard Determination of protein in food

ZA-SANS, When measuring crude protein

SANS 8968-5:2006 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
SANS 8968-4:2006 Milk - Determination of nitrogen content Part 4: Determination of non-protein-nitrogen content
SANS 21572:2005 Foodstuffs - Methods for the detection of genetically modified organisms and derived products - Protein based methods

国家能源局, When measuring crude protein

NB/T 34057.8-2020 Determination of chemical composition of lignocellulosic biomass raw materials Part 8: Determination of protein

Professional Standard - Chemical Industry, When measuring crude protein

HG/T 3645-1999 Method for the determination of aqueous extractable protein in natural rubber gloves using the Lowry method

Agricultural Standard of the People's Republic of China, When measuring crude protein

农业部783号公告-6-2006 Determination of iodinated casein in feeds.Liquid chromatography/Mass spectrometry
农业部1068号公告-3-2008 Determination of ten kinds of anabolic androgenic steroids in feeds.High performance liquid chromatography tandem mass spectrometry
农业部1782号公告-12-2012 Food safety detection of genetically modified organisms and derived products.Methods for analysis of amino acid sequence of protein by MALDI-TOF-MS