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Database: 365,228(8 Aug 2026)

protein molecular weight

protein molecular weight, Total:163 items.

The international standard classification for "protein molecular weight" includes: Latex and raw rubber , Animal feeding stuffs , food products in general , Food additives , Fruits. Vegetables , Man-made fibres .

The Chinese standard classification for "protein molecular weight" includes: Grain processing and products , Medical and foodstuff rubber products , Livestock and poultry feed and additive , Food sanitation , Other fermented goods , Other cash crops , Chemical fibre in general , Chemical fibre , Fire-fighting equipment and devices , Cereal crop and product , Basic standard and general method on forestry .


Professional Standard - Commodity Inspection

  • SN/T 1048-2002 Cereals and feedstuffs for import and export - Identification for barley variety - Method of protein electrophoresis

Group Standards of the People's Republic of China

  • T/ZGKSL 012-2023 Quality requirements for collagen products
  • T/NAHIEM 72-2023 Quality requirements for medical collagen products
  • T/ZJBX 10-2021 Determination of the proportion of protein hydrolysates with relative molecular weight less than 1000u in protein feed
  • T/CIET 350-2024 Quality requirements for collagen casings

Agricultural Standard of the People's Republic of China

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

  • GB/T 17811-1999 Determination of digestibility in animal protein feeds--Pepsin method
  • GB/T 21870-2008 Medical gloves made from natural rubber latex - Determination of water-extractable protein using the modified Lowry method
  • GB/T 5009.5-2003 Determination of protein in foods
  • GB/T 15673-1995 Method for determination of crude protein in edible fungi
  • GB/T 23527.1-2023 Quality requirements for enzyme preparations—Part 1:Protease preparations

Professional Standard - Textile

Professional Standard - Public Safety Standards

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

Taiwan Provincial Standard of the People's Republic of China

  • CNS 3449-1988 Methods of Test for Milk and Milk Products: The Quantitive Analysis of Protein

Professional Standard - Agriculture

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

Hebei Provincial Standard of the People's Republic of China

Hainan Provincial Standard of the People's Republic of China

Japanese Industrial Standards Committee (JISC)

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

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 46 7092-27-1998 Testing methods for feeding stuffs - Part 27: Determination of the protein content
  • CSN 56 0512-12-1995 Methods of milled produets analysis - Part 12: Determination of protein content

Korean Agency for Technology and Standards (KATS)

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 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 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
  • ISO 5550:2006 | IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference 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 8968-5:2001 | 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 5543:2004 Caseins and caseinates - Determination of fat content - Gravimetric method (Reference method)
  • ISO 8968-4:2001|IDF 20-4:2001 Determination of milk nitrogen content Part 4: Determination of non-protein nitrogen content
  • 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 21572:2019 Foodstuffs — Molecular biomarker analysis — Immunochemical methods for the detection and quantification of proteins

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 5739-2021 Caseins and caseinates — Determination of scorched particles content
  • 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

GSO

  • 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)
  • 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 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 2101:2010 Protein-Rich concentrated Nutrient Supplementary foods
  • GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
  • OS GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
  • GSO ISO 5739:2015 Caseins and caseinates -- Determination of contents of scorched particles and of extraneous matter

German Institute for Standardization

  • 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 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 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 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic method
  • DIN 10470:1999 Determination of whey protein content and casein content in total protein of milk and milk products - Derivative spectroscopic method
  • DIN 10472:1996 Determination of casein and whey protein contents of milk and milk products - Electrophoretic 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 ISO 5550 E:2020-06 Caseins and caseinates - Determination of moisture content (Reference method)
  • DIN ISO 5550:2020-12 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
  • 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 21572 E:2012-02 Protein-based methods for food molecular biomarker analysis (draft)
  • DIN EN ISO 21572 E:2019-03 Protein-based methods for food molecular biomarker analysis (draft)
  • 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 21572:2020-02 Foodstuffs - Molecular biomarker analysis - Immunochemical methods for the detection and quantification of proteins (ISO 21572:2019); German version EN ISO 21572:2019
  • 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

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 V04-221-4*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 V03-944:2021 Graines protéagineuses - Pois, fèves et féveroles - Détermination des impuretés
  • NF V03-021:2013 Foodstuffs - Molecular biomarker analysis - Protein-based methods
  • NF EN ISO 21572:2019 Food products - Molecular biomarker analysis - Immunochemical methods for protein detection and quantification
  • 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 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
  • 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 V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-nitrogen content.

AT-ON

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

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)

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-...
  • DANSK DS/ISO 21572:2019 Foodstuffs – Molecular biomarker analysis – Protein-based methods

British Standards Institution (BSI)

  • 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 ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
  • BS EN ISO 21572:2013 Foodstuffs. Molecular biomarker analysis. Protein-based methods
  • BS EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Determination of protein-nitrogen content
  • BS ISO 5543:2004 Caseins and caseinates - Determination of fat content - Gravimetric method (reference method)
  • 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 EN ISO 21572:2019 Foodstuffs. Molecular biomarker analysis. Immunochemical methods for the detection and quantification of proteins

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)
  • UNE 34-871-1986 Processed cheese. Determination of protein content
  • UNE 64102:1977 MIXED FEEDS AND RAW MATERIALS. TOTAL PROTEIN (RAW PROTEIN)
  • UNE 34871:1986 PROCESSED CHEESE PRODUCTS. DETERMINATION OF THE PROTEIN CONTENT.

Lithuanian Standards Office

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

GOSTR

  • GOST 34551-2019 Сonfectionery. Method for determination of mass fraction of protein

European Committee for Standardization (CEN)

  • EN ISO 21572:2013 Foodstuffs - Molecular biomarker analysis - Protein-based methods
  • EN ISO 21572:2019 Foodstuffs - Molecular biomarker analysis - Immunochemical methods for the detection and quantification of proteins (ISO 21572:2019)
  • 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)

RU-GOST R

IN-BIS

  • IS 1167-1965 Casein specifications (food quality)
  • IS 2006-1988 Methods for the quantitative chemical analysis of binary mixtures of protein fibers and certain other non-protein fibers
  • IS 6557-1972 Protein Flakes Specifications Not Food Quality
  • IS 7482-1989 Protein Drinks—Specifications
  • IS 9095-1979 Specifications for protein gummies

CEN - European Committee for Standardization

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

Society of Automotive Engineers (SAE)

Danish Standards Foundation

  • DS/ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
  • DS/EN ISO 21572:2013 Foodstuffs - Molecular biomarker analysis - Protein-based methods
  • DS 2253:1983 Water quality. Determination of aerobic proteclytic bacteria at 30 centigrades
  • DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content

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

PL-PKN

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

CH-SNV

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 7871-4-2008 Wheat and wheat ftour.Gluten content.Part 4: Determination of dry gluten from wet gluten by a rapid drying method

HU-MSZT

South African Bureau of Standard

  • SANS 8968-5:2006 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content