How to Measure Protein

How to Measure Protein, Total:307 items.

The international standard classification for "How to Measure Protein" includes: Man-made fibres , Fruits. Vegetables , Animal feeding stuffs , food products in general , Edible oils and fats. Oilseeds , Meat and meat products , Cereals, pulses and derived products , General methods of tests and analysis for food products , Tobacco, tobacco products and related equipment , Laboratory medicine .

The Chinese standard classification for "How to Measure Protein" includes: Chemical fibre in general , Chemical fibre , Cereal crop and product , Other cash crops , Livestock and poultry feed and additive , Food sanitation , Basic standard and general method on forestry , Oil crop and product , Basic standards and general methods , Meat processing and products , Cereal crop and forage crop in general , Basic standards and general methods , Fire-fighting equipment and devices , Tobacco , Medical laboratory equipment .

Professional Standard - Textile

FZ/T 50018-2013 Determination of the protein content of the protein viscose fiber
FZ/T 54029-2010 Protein viscose filament yarns
FZ/T 54028-2010 Protein viscose staple fiber

Professional Standard - Agriculture

NY/T 520-2002 Quality protein maize
245药典三部-2020 Content Determination Method 3124 Human Granulocyte Stimulating Factor Protein Content Determination Method
111药典四部-2015 0700 Other Determination Methods 0731 Determination of Protein Content
2330药典二部-2010 Appendix VII M Determination of protein content
201药典三部-2015 Content Determination Method 0731 General Principles of Protein Content Determination Method 50
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content
176药典三部-2010 Appendix Ⅵ ⅥB protein assay
NY/T 3493-2019 Agricultural biomass raw materials. Determination of crude protein
226药典三部-2010 Appendix IX IXD Determination of protein residues in Pseudomonas bacteria
651药典第一增补本-2010 Part Two Revised Appendix Appendix VII M Determination of Protein Content
220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method

未注明发布机构

CLSI C64-2021 Quantitative Measurement of Proteins and Peptides by Mass Spectrometry

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 15673-1995 Method for determination of crude protein in edible fungi
GB/T 35809-2018 Method for analysis of forestry biomass—Determination of protein content
GB/T 24897-2010 Inspection of grain and oils—Crude protein determination in rice—Near-infrared method
GB/T 5009.5-2003 Determination of protein in foods
GB/T 17811-2008 Determination of pepsin digestibility in animal protein feeds - Filtration method
GB/T 41366-2022 Livestock and poultry meat quality testing—Determination of moisture,protein and fat—Near-infrared spectroscopy method
GB/T 17811-1999 Determination of digestibility in animal protein feeds--Pepsin method
GB/T 24901-2010 Inspection of grain and oils—Determination of crude protein in maize—Near-infrared method
GB/T 14489.2-1993 Method for determination of crude protein in oilseed
GB/T 24899-2010 Inspection of grain and oils—Determination of crude protein in wheat—Near-infrared method
GB/T 14771-1993 Method for determination of protein content in foods
GB/T 5009.5-1985 Method for determination of protein in foods
GB/T 19495.8-2004 Detection of genetically modified plants and derived products-Protein based methods

Group Standards of the People's Republic of China

T/ZGKSL 002-2022 General quality requirements for collagens oligopeptides Elastin peptide
T/SZAS 40-2021 Dataset of proteomics
T/ZGKSL 012-2023 Quality requirements for collagen products
T/ESL 22003-2023 Guideline for formulation of laying hens diet with low protein content
T/SHNX 001-2025 Determination of lactoferrin, α-lactalbumin and β-lactoglobulin in raw bovine milk by liquid chromatography-tandem mass spectrometry
T/ZJBX 10-2021 Determination of the proportion of protein hydrolysates with relative molecular weight less than 1000u in protein feed
T/NAHIEM 72-2023 Quality requirements for medical collagen products
T/CIET 350-2024 Quality requirements for collagen casings

Professional Standard - Public Safety Standards

GA/T 52-1993 Quality grading for protein-foam fire extinguishing agent and fluoroprotein-foam fire extinguishing agent

Hebei Provincial Standard of the People's Republic of China

DB13/T 1098-2009 Determination of protein in feed

Taiwan Provincial Standard of the People's Republic of China

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 3449-2007 Method of test for milk and milk products - Determination of protein
CNS 6511-2008 Method of test for meat and meat products - Determination of crude protein content
CNS 3449-1988 Methods of Test for Milk and Milk Products: The Quantitive Analysis of Protein

Professional Standard - Tobacco

YC/T 166-2003 Tobacco and tobacco products - Determination of total proteins content(Albumins)

Professional Standard - Commodity Inspection

SN/T 3926-2014 Determination of protein content in dairy foods,egg foods and soy foods for export - Coomassie brilliant blue method

Professional Standard - Machinery

JB/T 12964-2016 Fast analyzer for the protein in milk and powder milk

Professional Standard - Medicine

YY/T 1456-2016 Human ferritin quantitative test reagent

RO-ASRO

STAS 2213/17-1976 SWEETS Determination of total proteinic content and milk proteinic substance content
STAS 21/6-1973 OILSEED RESIDUES Determination of protein of protein brut content
STAS 6356-1976 MILK AND MILK PRODUCTS Proteic substances determinat ion
STAS 6182/44-1977 WIN E Determination of proteins
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

CZ-CSN

CSN 57 0111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 570111-5-2002 Testing methods for casein and caseinates - Determination of protein content
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

International Organization for Standardization (ISO)

ISO 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
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 20483:2006 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 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 5739:1983 Caseins and caseinates; Determination of scorched particles content
ISO 5550:2006 Caseins and caseinates - Determination of moisture content (Reference method)
ISO 5550:2006|IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference method)
ISO 5548:2004 | IDF 106:2004 Caseins and caseinates — Determination of lactose content — Photometric method
ISO 5548:2004|IDF 106:2004 Caseins and caseinates — Determination of lactose content — Photometric method
ISO 5548:2004 Caseins and caseinates - Determination of lactose content - Photometric method
ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
ISO 5550:1978 Caseins and caseinates; Determination of water content (Reference method)
ISO 5548:1980 Caseins and caseinates; Determination of lactose content; Photometric method
ISO 5550:2006 | IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference method)
ISO 8968-5:2001|IDF 20-5:2001 Determination of milk nitrogen content Part 5: Determination of protein nitrogen content
ISO 5543:2004 | IDF 127:2004 Caseins and caseinates — Determination of fat content — Gravimetric method (Reference method)
ISO 8968-5:2001 | IDF 20-5:2001 Milk — Determination of 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 8968-4:2001|IDF 20-4:2001 Determination of milk nitrogen content Part 4: Determination of non-protein nitrogen content
ISO 5543:2004 Caseins and caseinates - Determination of fat content - Gravimetric method (Reference method)
ISO 5543:2004|IDF 127:2004 Gravimetric method for determination of fat content in casein and caseinate (reference method)
ISO 5543:1986 Caseins and caseinates; Determination of fat content; Gravimetric method (Reference method)
ISO 5983:1979 Animal feeding stuffs; Determination of nitrogen content and calculation of crude protein content
ISO 5739:2003 | IDF 107:2003 Caseins and caseinates — Determination of contents of scorched particles and of extraneous matter
ISO 5542:1984 Milk; Determination of protein content; Amido black dye-binding method (Routine method)

Korean Agency for Technology and Standards (KATS)

KS H ISO 5549:2021 Caseins and caseinates — Determination of protein content(Reference method)
KS H ISO 5549:2006 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 5549-2006(2016) Caseins and caseinates－Determination of protein content(Reference method)
KS H 1204-2012 Testing method for crude proteins content
KS H 1204-2001 Testing method for crude proteins content
KS C 6024-1995(2000) MEASURING METHODS FOR TRANSISTORS
KS H 1204-2022 Testing method for crude proteins content
KS C 6024-1985 MEASURING METHODS FOR TRANSISTORS
KS H 1204-2021 Testing method for crude proteins content
KS H ISO 5739:2006 Caseins and caseinates－Determination of scorched particles content
KS M 3048-1990(2001) TESTING METHODS OF PLASTICS BY THERMOGRAVIMETRY
KS M 3826-1993(1999) DETERMINATION OF CHLORINE IN CHLORINE-CONTAINING POLYMERS, COPOLYMERS AND THEIR COMPOUNDS
KS M 3006-2003(2008) Determination of tensile properties of plastics
KS H ISO 5739-2006(2016) Caseins and caseinates－Determination of scorched particles content
KS H ISO 5739:2021 Caseins and caseinates — Determination of scorched particles content
KS C 2607-1980 TESTING METHODS OF SEMICONDUCTOR
KS C 2607-1974(2000) TESTING METHODS OF SEMICONDUCTOR
KS M 1211-2002(2007) TESTING METHODS OF CAUSTIC SODA
KS H ISO 5739-2021 Caseins and caseinates — Determination of scorched particles content
KS M 3034-1980(2011) Test methods for electrical resistivity of conductive plastics
KS K 0507-2006 Test method for length of fabrics
KS E 3715-2001 Method for determination of mineral matter in coal
KS M 3034-1985 Test methods for electrical resistivity of conductive plastics
KS I 2208-2008(2013) Methods for determination of carbon dioxide in air
KS M 1211-1985 TESTING METHODS OF CAUSTIC SODA
KS M 3041-2006(2011) Test method for melting point of semicrystalline polymers
KS D 2571-1987(1997) METHODS FOR DETERMINATION OF PHYSICAL PROPERTIES OF ALUMINIUM OXIDE
KS H ISO 5550-2007(2012) Caseins and caseinates－Determination of moisture content(Reference method)
KS K 0507-1985 Test method for length of fabrics
KS H ISO 5550:2007 Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5543-2006(2016) Caseins and caseinates－Determination of fat content－Gravimetric method(Reference method)
KS K 0595-2006 Identification of fluorescent brightening agents classes on textiles
KS H ISO 5548:2020 Caseins and caseinates－Determination of lactose content－Photometric method
KS P ISO 8627-2004 Dentistry－Stiffness of tufted area of tooth-brushes
KS P ISO 8627:2008 Dentistry－Stiffness of tufted area of tooth-brushes
KS H ISO 5548:2006 Caseins and caseinates－Determination of lactose content－Photometric method
KS F 2234-2004(2014) Measuring method for the mass per unit volume(density) and the mass per unit of surface area of polystyrene composite wood wool cement boards
KS H ISO 5550-2021 Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5548-2020 Caseins and caseinates－Determination of lactose content－Photometric method
KS K 0795-2006 Test method for angle of spirality in plain knitted garments
KS F 8115-1999(2009) Earth-moving machinery－Method for locating the centre of gravity
KS P ISO 8627:2004 Dentistry－Stiffness of tufted area of tooth-brushes
KS H ISO 5543:2021 Caseins and caseinates — Determination of fat content — Gravimetric method(Reference method)
KS H ISO 5543:2006 Caseins and caseinates－Determination of fat content－Gravimetric method(Reference method)
KS H ISO 5543-2021 Caseins and caseinates — Determination of fat content — Gravimetric method(Reference method)
KS W 2013-1977(2010) Methods of weighing and determination of center of gravity location for aircraft
KS E 3607-1992(1997) DETERMINATION OF CALORIFIC VALUE OF NATURAL GAS
KS E 3607-1982 DETERMINATION OF CALORIFIC VALUE OF NATURAL GAS
KS M 3858-1988(1998) TESTING METHODS FOR PHOTOGRAPHIC GRADE CHEMICALS
KS H ISO 5542:2006 Milk－Determination of protein content－Amido black dye-binding method(Rountine method)

German Institute for Standardization

DIN 10454:1983-03 Determination of protein content of caseins and caseinates; reference method
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 10470:2011 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN 10464:1994-08 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus 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 8968-4 E:2013-09 Determination of nitrogen content of milk and milk products Part 4: Determination of protein and non-protein nitrogen content and calculation of pure protein content (Reference Method) (Draft)
DIN EN ISO 8968-4 E:2013 Draft Document - 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/DIS 8968-4:2013); German version prEN ISO 8968-...
DIN 10472:1996 Determination of casein and whey protein contents of milk and milk products - Electrophoretic method
DIN 10470:2011-07 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
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 10470 E:2010 Draft Document - Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
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 10470 E:2010-05 Draft Document - Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
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 ISO 5550 E:2020-06 Caseins and caseinates - Determination of moisture content (Reference method)
DIN 10470:1999-07 Determining of whey protein content and casein content in total protein of milk and milk products by derivative spectroscopy
DIN 10453:1983-03 Determination of water content of caseins and caseinates; reference method
DIN ISO 5550:2020-12 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
DIN 10466:2001-09 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN EN ISO 21415-4:2007 Wheat and wheat flour - Gluten content - Part 4: Determination of dry gluten from wet gluten by a rapid drying method (ISO 21415-4:2006); German version EN ISO 21415-4:2007
DIN 10454:1983 Determination of protein content of caseins and caseinates; reference method

AT-ON

ONORM DIN 10454-1993 Determination of protein content of caseins and caseinates - Reference method
ONORM DIN 10453-1993 Determination of water content of caseins and caseinates - Reference method

Japanese Industrial Standards Committee (JISC)

JIS K 0602:2000 Proteins -- Serum albumin -- Methods for quantitative analysis
JIS K 0605:2000 Proteins -- Trypsin -- Methods for quantitative analysis
JIS K 0606:2000 Proteins -- Transferrin -- Methods for quantitative analysis
JIS K 0603:2000 Proteins -- Immunoglobulin -- Methods for quantitative analysis
JIS K 0604:2000 Proteins -- Monoclonal IgG -- Methods for quantitative analysis

Lithuanian Standards Office

LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)

GCC Standardization Organization

GSO 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)
GSO IEC 60440:2013 Method of measurement of non-linearity in resistors
GSO ISO 14695:2007 Industrial fans - Method of measurement of fan vibration
GSO ISO 5550:2015 Caseins and caseinates -- Determination of moisture content (Reference method)
GSO ISO 5543:2015 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
GSO BS 7882:2010 Method for calibration and classfication of torque measuring devices
GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
GSO ISO 5548:2015 Caseins and caseinates -- Determination of lactose content -- Photometric method
GSO ISO 5739:2015 Caseins and caseinates -- Determination of contents of scorched particles and of extraneous matter

British Standards Institution (BSI)

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 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 ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
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 21415-4:2007 Wheat and wheat flour - Gluten content - Determination of dry gluten from wet gluten by a rapid drying method
BS ISO 5550:2006 Caseins and caseinates - Determination of moisture content (Reference method)
BS 6248-10:1986 Caseins and caseinates-Method for determination of fat (gravimetric reference method)
BS ISO 5548:2004 Caseins and caseinates - Determination of lactose content - Photometric methods
BS EN ISO 21415-3:2007 Wheat and wheat flour - Gluten content - Determination of dry gluten from wet gluten by an oven drying method
BS EN ISO 21415-1:2007 Wheat and wheat flour - Gluten content - Determination of wet gluten by a manual method
BS ISO 5543:2004 Caseins and caseinates - Determination of fat content - Gravimetric method (reference method)

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 8968-4:2022 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)
BH GSO ISO 5543:2016 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
BH GSO ISO 5739:2016 Caseins and caseinates -- Determination of contents of scorched particles and of extraneous matter

Bureau of Indian Standards

IS 18836-2024 Milk and Milk Products - Determination of Nitrogen Content - Determination of Protein and Non-Protein Nitrogen Content and True Protein Content Calculation (Reference Method)
IS 11888-2005 Casiens And Caseinated - Determination Of Contents Of Scorched Particles And Of Extraneous Matter
IS 11963-2005 Caeins and Caseinates - Determination of Lactose Content - Photometric Method
IS 11920-2012 Cassein and Caseinates -Determination of Moisture Content (Reference Method)

Ente Nazionale Italiano di Unificazione

UNI 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)
UNI EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Determination of protein- nitrogen content
UNI 22632:2002 Oilseeds - Vegetable proteins content - Determination of total proteins (biuret method)
UNI 22609:1992 Seed and vegetable oils and derived products. Vegetable proteins. Determination of total residue hexane in protein substances.
UNI EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Determination of non-protein nitrogen content
UNI 10689:1997 Durum wheat cariopsis. Mechanical determination of the dry gluten content.
UNI 22604:1992 Seed and vegetable oils and derived products. Vegetable proteins. Determination of crude protein.
UNI ISO 5543:2018 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
UNI 22629:2002 Oilseeds - Vegetable proteins content - Determination of soluble proteins (Bradford method)
UNI 7163:1979 Ready-mix concrete

Standard Association of Australia （SAA）

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 1871.9:1976 List of methods for examination of waters Nitrogen (albuminoid)

Danish Standards Foundation

DANSK DS/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)
DS/ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
DS 2253:1983 Water quality. Determination of aerobic proteclytic bacteria at 30 centigrades
DANSK DS/ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter

Gosstandart of Russia

GOST 10846-1991 Grain and products of its processing. Method for determination of protein
GOST R 51470-1999 Caseins and caseinates. Method for determination of protein content
GOST ISO 8968-4-2021 Milk and dairy products. Determination of nitrogen content. Part 4. Determination of protein and non-protein nitrogen content and calculation of true protein content (reference method)..
GOST ISO 5548-2016 Caseins and caseinates. Photometric method for determining the mass fraction of lactose
GOST 34551-2019 Сonfectionery. Method for determination of mass fraction of protein
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST R 51469-1999 Caseins and caseinates. Photometric method for determination of lactose content
GOST R 51464-1999 Caseins and caseinates. Method for determination of water content
GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method
GOST R 54478-2011 Grain. Methods of determination quantity and quality of gluten in wheat
GOST ISO 5550-2017 Caseins and caseinates. Determination of moisture content (Reference method)
GOST R 51465-1999 Caseins and caseinates. Determination of scorched particles content
GOST 25179-1990 Milk. Methods for determination of protein
GOST R 52993-2008 Caseins and caseinates. Determination of moisture content (Reference method)
GOST 13496.4-1993 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
GOST 13496.4-2019 Fodder, мixed fodder and raw mixed fodder. Methods of nitrogen and crude protein determination
GOST R 51466-1999 Caseins. Method for determination of "fixed ash" mass fraction
GOST 13496.4-1984 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
GOST R 54662-2011 Cheeses and processed cheeses. Determination of protein mass fraction by the Kjeldahl method
GOST R 57476-2017 Bird food protein. Specifications
GOST R 51463-1999 Rennet caseins and caseinates. Method for determination of ASH content
GOST R 53951-2010 Milk and milk-containing products. Determination of mass part of protein by Kjeldahl method
GOST 25011-1981 Meat and meat products. Methods of protein determination
GOST 25179-2014 Milk and milk products. Method for determination of protein

Association Francaise de Normalisation

NF EN ISO 8968-4:2016 Milk and dairy products - Determination of nitrogen content - Part 4: determination of protein and non-protein nitrogen content and calculation of true protein content (Reference method)
NF V04-387:1985 Caseins and caseinates. Determination of protein content (reference 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 V04-389:1985 Caseins and caseinates. Determination of scorched particles content.
NF V04-388*NF ISO 5548:2008 Caseins and caseinates - Determination of lactose content - Photometric method.
NF V04-382:1988 Caseins and caseinates. Determination of fat content. Gravimetric method (reference method).
NF ISO 5548:2008 Caseins and caseinates - Determination of lactose content - Photometric method
NF ISO 5550:2007 Caseins and caseinates - Determination of moisture content (reference method)
NF V04-382:2008 Caseins and caseinates - Determination of fat content - Gravimetric method (Reference method).
NF V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-nitrogen content.
NF V18-100:1977 Animal feeding stuffs.determination of nitrogen for the calcultion of crude protein content.
NF V03-032:2024 Foodstuffs - Determination of the nitrogen content by the Kjeldahl method and calculation of the protein content
NF V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF EN ISO 20418-1:2018 Textiles - Qualitative and quantitative proteomic analysis of certain animal fibers - Part 1: detection of peptides by LC ESI MS with protein reduction
NF EN ISO 20418-3:2020 Textiles - Qualitative and quantitative proteomic analysis of certain animal fibers - Part 3: detection of peptides by LC-MS without protein reduction

Spanish Association for Standardization (UNE)

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)
AENOR UNE-EN ISO 8968-4:2016 Milk and dairy products. Determination of nitrogen content. Part 4: Determination of protein and non-protein nitrogen content and calculation of true protein content (Reference method). (ISO 8968-4:2016)
UNE 34871:1986 PROCESSED CHEESE PRODUCTS. DETERMINATION OF THE PROTEIN CONTENT.
UNE 64102:1977 MIXED FEEDS AND RAW MATERIALS. TOTAL PROTEIN (RAW PROTEIN)
UNE 34-871-1986 Processed cheese. Determination of protein content
UNE 64011:1970 MIXED FEEDS AND RAW MATERIALS. QUANTITATIVE DETERMINATION OF THE RAW PROTEIN
AENOR UNE 34400-7:1967 Test methods for wheat flour. Determination of protein.
UNE-EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content. (ISO 8968-5:2001)

GM Daewoo

GMKOREA EDS-T-1026-2011 How to evaluate the honing quality of cylinder boa

Standards Norway

NS-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)

CEN - European Committee for Standardization

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content

Swedish Institute for Standards

SS-EN ISO 8968-4:2017 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) (ISO 8968-4:2016)

PL-PKN

PN C04288-14-1987 Technical fats Methods of testing Determination of protein content

IN-BIS

IS 1167-1965 Casein specifications (food quality)
IS 6557-1972 Protein Flakes Specifications Not Food Quality
IS 7482-1989 Protein Drinks—Specifications
IS 9095-1979 Specifications for protein gummies
IS 2006-1988 Methods for the quantitative chemical analysis of binary mixtures of protein fibers and certain other non-protein fibers
IS 7481-1974 How to measure protein efficiency ratio (PER)
IS 11888-1987 Method for determination of charred particle content in casein and caseinates

International Dairy Federation (IDF)

IDF 107-2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
IDF 78-2006 Caseins and caseinates. Determination of moisture content (Reference method)
IDF 20-5-2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
IDF 20-4-2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content

Society of Automotive Engineers (SAE)

SAE AMS1800B Foam, Fire Extinguishing Liquid Protein and Fluoroprotein
SAE AMS1800-2011 FOAM, FIRE EXTINGUISHING LIQUID Protein and Fluoroprotein
SAE AMS1800 Foam, Fire Extinguishing Liquid Protein and Fluoroprotein
SAE AMS1800A Foam, Fire Extinguishing Liquid Protein and Fluoroprotein

European Committee for Standardization (CEN)

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)

American Water Works Association (AWWA)

AWWA WQTC69451 What Is the Quality of My Water? Answering the Public When Multiple Sources Are Involved
AWWA DSS69194 What Is the Quality of My Water? Answering the Public When Multiple Sources Are Involved
AWWA ACE68655 What is the Quality of My Water? Answering the Public When Multiple Sources Are Involved
AWWA RSP64405 Water Quality in the Network: How to Prevent Discoloration
AWWA ACE61871 How Distribution Quality Can Drive Treatment Process Design: Saws First Treatment Plant

CU-NC

NC 86-05-1984 Cereals. Flours Determination of Protein
NC 26-75-17-1985 Drugs. Protamine Sulphate, Injection Quality Specifications

PT-IPQ

NP 1986-1991 Milks Determination of protein content. Kjeldahl technique
NP 2935-1988 milk. Protein content was measured by the black starch method. current procedures

VN-TCVN

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 7871-3-2008 Wheat and wheat flour.Gluten content.Part 3: Determination of dry gluten from wet gluten by an oven drying method
TCVN 7253-2003 Tobacco and tobacco products.Determination of nitrogen protein content
TCVN 7871-4-2008 Wheat and wheat ftour.Gluten content.Part 4: Determination of dry gluten from wet gluten by a rapid drying method
TCVN 8766-2011 Milk and milk products.Determination of protein content.Acid orange 12 dye-binding method

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 5543:2015 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
OS GSO ISO 5548:2015 Caseins and caseinates -- Determination of lactose content -- Photometric method
OS GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
OS GSO ISO 5550:2015 Caseins and caseinates -- Determination of moisture content (Reference method)

Magyar Szabványügyi Testület

MNOSZ 448-28.lap-1955 Water testing - amino acid protein testing
MSZ 21340-1980 animal protein feed
MSZ KGST 2787-1980 Determination of protein content of preservative foods
MNOSZ 17619-1954 Definition of the concept of protein content in preserved foods
MSZ 05 26.1510-1983 Protein content 40-150

American Society for Testing and Materials (ASTM)

ASTM F831-83 Net Protein Ratio (NPR) Test Method

South African Bureau of Standard

SANS 6039:2005 Amylaceous and proteinaceous matter detection in wood adhesives
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

Indonesia Standards

SNI 8076-2014 Kolagen kasar dari sisik ikan - Syarat mutu dan pengolahan