Error analysis of protein content measured by lowry method

Error analysis of protein content measured by lowry method, Total:261 items.

The international standard classification for "Error analysis of protein content measured by lowry method" includes: Man-made fibres , Latex and raw rubber , Fruits. Vegetables , food products in general , Cereals, pulses and derived products , Textiles in general , Meat and meat products , Tobacco, tobacco products and related equipment , Protection against crime .

The Chinese standard classification for "Error analysis of protein content measured by lowry method" includes: Basic standard and general method on forestry , Chemical fibre in general , Medical and foodstuff rubber products , Other cash crops , Food processing and products in general , Cereal crop and forage crop in general , Silk and silk fabric in general , Basic standards and general methods , Meat processing and products , Tobacco , Crime judging technology .

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

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

Professional Standard - Chemical Industry

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

Professional Standard - Agriculture

2330药典二部-2010 Appendix VII M Determination of protein content
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
242药典三部-2020 Content Determination Method 3121 Determination of Human Albumin Polymer
223药典三部-2015 Content Determination Method 3121 General Principles of Human Albumin Polymer Determination Method 61
NY/T 2007-2011 Determination of the crude protein content in cereals and pules seeds by combustion according to the dumas principle
651药典第一增补本-2010 Part Two Revised Appendix Appendix VII M Determination of Protein Content
244药典三部-2020 Content Determination Method 3123 Determination of Glycine Content in Human Immunoglobulin
220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content
226药典三部-2015 Content Assay 3124 Recombinant Human Granulocyte Stimulating Factor Protein Assay General Rules 62
206药典四部-2020 3100 Content Determination 3124 Recombinant Human Granulocyte Stimulating Factor Protein Content Determination
203药典四部-2020 3100 Content Determination 3121 Determination of Human Albumin Polymer
201药典三部-2015 Content Determination Method 0731 General Principles of Protein Content Determination Method 50
218药典四部-2015 3100 Content Determination 3124 Recombinant Human Granulocyte Stimulating Factor Protein Content Determination
215药典四部-2015 3100 Content Determination 3121 Determination of Human Albumin Polymer

未注明发布机构

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 ISO 5550 E:2020-06 Caseins and caseinates - Determination of moisture content (Reference method)

Professional Standard - Textile

FZ/T 50018-2013 Determination of the protein content of the protein viscose fiber

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

GB/T 42699.1-2023 Textiles—Qualitative and quantitative proteomic analysis of some animal hair fibres—Part 1:Peptide detection using LC-ESI-MS with protein reduction
GB/T 24899-2010 Inspection of grain and oils—Determination of crude protein in wheat—Near-infrared method
GB/T 44214-2024 Test method for non-protein content in silk
GB/T 24871-2010 Inspection of grain and oils—Crude protein determination in wheat flour—Near-infrared method
GB/T 21870-2008 Medical gloves made from natural rubber latex - Determination of water-extractable protein using the modified Lowry method
GB/T 5511-2008 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
GB/T 24901-2010 Inspection of grain and oils—Determination of crude protein in maize—Near-infrared method
GB/T 15673-1995 Method for determination of crude protein in edible fungi
GB/T 24897-2010 Inspection of grain and oils—Crude protein determination in rice—Near-infrared method

Professional Standard - Commodity Inspection

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

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 41366-2022 Livestock and poultry meat quality testing—Determination of moisture,protein and fat—Near-infrared spectroscopy method

Taiwan Provincial Standard of the People's Republic of China

CNS 6511-2008 Method of test for meat and meat products - Determination of crude protein content

Tianjin Provincial Standard of the People's Republic of China

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

Professional Standard - Tobacco

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

Professional Standard - Public Safety Standards

GA/T 819-2009 Analytical method of acid dyes on the protein fibers

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
JIS K 0602:1992 Methods for quantitative analysis of serum albumin
JIS K 0607:2000 Proteins -- Glucoseoxydase -- Methods for quantitative analysis
JIS K 0605:1992 Methods for quantitative analysis of trypsin
JIS K 0603:1992 Methods for quantitative analysis of immuno globulin
JIS K 0609:1996 Methods for quantitative analysis of immobilized trypsin
JIS K 0606:1993 Methods for quantitative analysis of transferrin

CZ-CSN

CSN 57 0111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 56 0512-12-1995 Methods of milled produets analysis - Part 12: Determination of protein content
CSN 570111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 46 7092-27-1998 Testing methods for feeding stuffs - Part 27: Determination of the protein content
CSN 57 0105 Cast.5-1984 Powdered and condensed milk products. Testing methods. Determination of protein content
CSN 57 0111 Cast.4-1979 Testing methods for asein. Determination f fat content
CSN 57 0111-2-2002 Testing methods for casein and caseinates - Methods of samphng of Chemical analysis
CSN 57 0153-1986 Testing methods for meat products and sterilized food in preserves. Determination of protein content according to Kjeldahl

International Organization for Standardization (ISO)

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 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
ISO 5543:1986 Caseins and caseinates; Determination of fat content; Gravimetric method (Reference method)
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 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 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
ISO 8968-4:2001/Cor 1:2011 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content; Technical Corrigendum 1
ISO 5550:2006 | IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference method)
ISO 23319:2022 Cheese and processed cheese products, caseins and caseinates — Determination of fat content — Gravimetric method
ISO 8968-5:2001|IDF 20-5:2001 Determination of milk nitrogen content Part 5: Determination of protein nitrogen content
ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
ISO 21415-2:2006 Wheat and wheat flour - Gluten content - Part 2: Determination of wet gluten by mechanical means
ISO 8968-5:2001 | IDF 20-5:2001 Milk — Determination of 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 5550:2006|IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference method)
ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
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 5550:2006 Caseins and caseinates - Determination of moisture content (Reference method)
ISO 5739:2003|IDF 107:2003 Determination of casein and caseinate coke particles and foreign matter content
ISO 5550:1978 Caseins and caseinates; Determination of water content (Reference method)
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 5548:2004 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|IDF 106:2004 Caseins and caseinates — Determination of lactose content — Photometric method
ISO 5548:1980 Caseins and caseinates; Determination of lactose content; Photometric method
ISO 5542:1984 Milk; Determination of protein content; Amido black dye-binding method (Routine method)
ISO 12243:2003/Amd 1:2012 Medical gloves made from natural rubber latex — Determination of water-extractable protein using the modified Lowry method — Amendment 1
ISO 5983:1979 Animal feeding stuffs; Determination of nitrogen content and calculation of crude protein content
ISO 21415-2:2015 Wheat and wheat flour - Gluten content - Part 2: Determination of wet gluten and gluten index by mechanical means
ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
ISO 20483:2013 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method

GSO

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)
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 ISO 5550:2015 Caseins and caseinates -- Determination of moisture content (Reference method)
OS GSO ISO 5550:2015 Caseins and caseinates -- Determination of moisture content (Reference method)
GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
BH GSO ISO 5543:2016 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
OS GSO ISO 5543:2015 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
GSO ISO 5543:2015 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
OS GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
OS GSO ISO 5548:2015 Caseins and caseinates -- Determination of lactose content -- Photometric method
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

KR-KS

KS H ISO 5549-2021 Caseins and caseinates — Determination of protein content(Reference method)
KS H 1204-2022 Testing method for crude proteins content
KS H ISO 5543-2021 Caseins and caseinates — Determination of fat content — Gravimetric method(Reference method)
KS H ISO 5548-2020 Caseins and caseinates－Determination of lactose content－Photometric method
KS K ISO 20418-3-2023 Textiles — Qualitative and quantitative proteomic analysis of some animal hair fibres — Part 3: Peptide detection using LC-MS without protein reduction
KS H ISO 5542-2021 Milk — Determination of protein content — Amido black dye-binding method(Rountine method)
KS M ISO 12243-2017 Medical gloves made from natural rubber latex — Determination of water-extractable protein using the modified Lowry method

Association Francaise de Normalisation

NF V04-382:2008 Caseins and caseinates - Determination of fat content - Gravimetric method (Reference method).
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 V04-221-4*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 V04-387:1985 Caseins and caseinates. Determination of protein content (reference method).
NF ISO 5550:2007 Caseins and caseinates - Determination of moisture content (reference method)
NF V04-382:1988 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 V04-388*NF ISO 5548:2008 Caseins and caseinates - Determination of lactose content - Photometric method.
NF ISO 5548:2008 Caseins and caseinates - Determination of lactose content - Photometric method
NF V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF V04-216:1985 Milk. Determination of protein content. Amido black dye-binding method (routine 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 EN 15948:2020 Cereals - Determination of water and protein content - Method using near-infrared spectroscopy on whole grains
NF V04-216:2011 Milk - Determination of protein content - Amido black dye-binding method (routine 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 V03-750*NF EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
NF V03-750:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method.

Korean Agency for Technology and Standards (KATS)

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 ISO 5543:2021 Caseins and caseinates — Determination of fat content — Gravimetric method(Reference method)
KS H 1204-2001 Testing method for crude proteins content
KS H ISO 5543:2006 Caseins and caseinates－Determination of fat content－Gravimetric method(Reference method)
KS H 1204-2021 Testing method for crude proteins content
KS J 4201-2023 Methods for quantitative analysis of serum albumin
KS M ISO 12243-2017(2022) Medical gloves made from natural rubber latex — Determination of water-extractable protein using the modified Lowry method
KS H ISO 5550-2021 Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5550-2007(2012) Caseins and caseinates－Determination of moisture content(Reference method)
KS J 4201-2008 Methods for quantitative analysis of serum albumin
KS H ISO 5739:2006 Caseins and caseinates－Determination of scorched particles content
KS H ISO 5543-2006(2016) Caseins and caseinates－Determination of fat content－Gravimetric method(Reference method)
KS J 4201-2018 Methods for quantitative analysis of serum albumin
KS H ISO 5550:2007 Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5548:2006 Caseins and caseinates－Determination of lactose content－Photometric method
KS J 4202-2018 Methods for quantitative analysis of immunoglobulin
KS J 4202-2023 Methods for quantitative analysis of immunoglobulin
KS H ISO 5548:2020 Caseins and caseinates－Determination of lactose content－Photometric method
KS H ISO 5542:2006 Milk－Determination of protein content－Amido black dye-binding method(Rountine method)
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)
KS J 4202-2008 Methods for quantitative analysis of immunoglobulin
KS J 4205-2008 Methods for quantitative analysis of immobilized trypsin

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)

ES-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)

RU-GOST R

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 R 51464-1999 Caseins and caseinates. Method for determination of water content
GOST R 51469-1999 Caseins and caseinates. Photometric method for determination of lactose content
GOST 13496.4-1984 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
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 R 51463-1999 Rennet caseins and caseinates. Method for determination of ASH content
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST 23327-1978 Milk. Methods for determination of the total protein content
GOST 23327-1998 Milk and milk products. Determination of mass part of total nitrogen by Kjeldahl method and determination of mass part of protein

SCC

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)
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)
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)
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-...
BS 5766-4:1981 Methods for analysis of animal feeding stuffs-Determination of nitrogen content and calculation of crude protein content
BS 5766-4:1998 Methods for analysis of animal feeding stuffs-Determination of nitrogen content and calculation of crude protein content
DIN 10470 E:2010 Draft Document - Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
UNE-EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content. (ISO 8968-5:2001)
DANSK DS/CEN/TS 15633-3:2012 Foodstuffs - Detection of food allergens by immunological methods - Part 3: Quantitative determination of hazelnut with an enzyme immunoassay using polyclonal antibodies and Lowry protein detection
AENOR UNE-EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Part 5: Determination of protein nitrogen content. (ISO 8968-5:2001)
NS-EN ISO 8968-5:2001 Milk — Determination of nitrogen content — Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)

German Institute for Standardization

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 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 10464:1994 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus method
DIN 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic 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 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001); German version EN ISO 8968-5:2001
DIN ISO 5550:2020-12 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
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 21415-2:2008 Wheat and wheat flour - Gluten content - Part 2: Determination of wet gluten by mechanical means (ISO 21415-2:2006); English version of DIN EN ISO 21415-2:2008-04
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 5550:2020 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
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 10466:2001-09 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN 10454:1983 Determination of protein content of caseins and caseinates; reference method
DIN CEN/TS 15633-3:2012-10*DIN SPEC 10700-2:2012-10 Foodstuffs - Detection of food allergens by immunological methods - Part 3: Quantitative determination of hazelnut with an enzyme immunoassay using polyclonal antibodies and Lowry protein detection; German version CEN/TS 15633-3:2012
DIN 10472:1996-06 Determination of casein and whey protein contents of milk and milk products - Electrophoretic method
DIN 10472:1996 Determination of casein and whey protein contents of milk and milk products - Electrophoretic method
DIN EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006); German version EN ISO 20483:2006

British Standards Institution (BSI)

BS ISO 5543:2004 Caseins and caseinates - Determination of fat content - Gravimetric method (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 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 8968-5:2002 Milk. Determination of nitrogen content. Determination of protein-nitrogen content
BS ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
BS ISO 5550:2006 Caseins and caseinates - Determination of moisture content (Reference method)
BS EN ISO 8968-4:2002 Milk. Determination of nitrogen content. Determination of non-protein nitrogen content
BS ISO 5548:2004 Caseins and caseinates - Determination of lactose content - Photometric methods
BS EN ISO 21415-1:2007 Wheat and wheat flour - Gluten content - Determination of wet gluten by a manual method
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 17997-2:2005 Milk - Determination of casein-nitrogen content - Direct method
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 6248-7:1982 Caseins and caseinates - Method for determination of protein content (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 EN ISO 20483:2013 Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl 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
ONORM DIN 10334-1994 Determination of nitrogen content of milk according to Kjeldahl and calculation of crude protein content

RO-ASRO

STAS 21/6-1973 OILSEED RESIDUES Determination of protein of protein brut content
STAS 2213/17-1976 SWEETS Determination of total proteinic content and milk proteinic substance content
STAS 6356-1976 MILK AND MILK PRODUCTS Proteic substances determinat ion
SR ISO 5549:1996 Caseins and caseinates - Determination of protein content (Reference method)
STAS SR 4895-6-1997 Tobacco and tobacco prodocts Determination of total proteins content (albumines)
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
STAS 6514-1975 FISH AND FISH PRODUCTS Determination of total proteic matters

Lithuanian Standards Office

LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)
LST EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)

CEN - European Committee for Standardization

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

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)
EN ISO 23319:2022 Cheese and processed cheese products, caseins and caseinates - Determination of fat content - Gravimetric method (ISO 23319:2022)
EN ISO 21415-2:2008 Wheat and wheat flour - Gluten content - Part 2: Determination of wet gluten by mechanical means
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 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
EN ISO 20483:2013 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

American Society for Testing and Materials (ASTM)

ASTM D5712-99e1 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D5712-05e1 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D5712-15(2020) Standard Test Method for Analysis of Aqueous Extractable Protein in Latex, Natural Rubber, and Elastomeric Products Using the Modified Lowry Method
ASTM D5712-10 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method

VN-TCVN

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 3705-1990 Aquatic products.Method for the determination of total nitrogen and 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 7871-2-2008 Wheat and wheat flour.Gluten content.Part 2: Determination of wet gluten by mechanical means
TCVN 4328-1-2007 Animal feeding stuffs.Determination of nitrogen content and calculation of crude protein content.Part 1: Kjeldahl 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)

International Dairy Federation (IDF)

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
IDF 107-2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter

GOSTR

GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method
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

Danish Standards Foundation

DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
DS/ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter

PL-PKN

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

ZA-SANS

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

AENOR

UNE 34871:1986 PROCESSED CHEESE PRODUCTS. DETERMINATION OF THE PROTEIN CONTENT.
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE 34081:1975 ANALYSIS METHODS FOR CHOCOLATES. MILK PROTEINS.

IN-BIS

IS 2006-1988 Methods for the quantitative chemical analysis of binary mixtures of protein fibers and certain other non-protein fibers
IS 11888-1987 Method for determination of charred particle content in casein and caseinates
IS 11963-1987 Photometric method for determination of lactose content in casein and caseinate

PT-IPQ

NP 2935-1988 milk. Protein content was measured by the black starch method. current procedures

BE-NBN

NBN T 91-253-1976 Water analysis methods - Determination of the albuminoid nitrogen

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