Sign In |Help & Support
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)

protein photometry

protein photometry, Total:181 items.

The international standard classification for "protein photometry" includes: Latex and raw rubber , Animal feeding stuffs , food products in general , Edible oils and fats. Oilseeds , Milk and milk products in general , Man-made fibres , General methods of tests and analysis for food products , Protection against crime .

The Chinese standard classification for "protein photometry" includes: Medical and foodstuff rubber products , Livestock and poultry feed and additive , Food sanitation , Oil crop and product , Basic standards and general methods , Cereal crop and product , Chemical fibre in general , Chemical fibre , Basic standards and general methods , Fire-fighting equipment and devices , Crime judging technology .


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

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 28715-2012 Determination of acidic and neutral protease activity in feed additives—Spetrophotometric method
  • GB/T 5009.5-2003 Determination of protein in foods
  • GB/T 14489.2-1993 Method for determination of crude protein in oilseed
  • GB/T 21870-2008 Medical gloves made from natural rubber latex - Determination of water-extractable protein using the modified Lowry method
  • GB/T 17811-2008 Determination of pepsin digestibility in animal protein feeds - Filtration method
  • GB/T 14771-1993 Method for determination of protein content in foods

Professional Standard - Agriculture

Professional Standard - Textile

Professional Standard - Hygiene

  • WS/T 42-1996 Blood - Determination of carboxyhemoglobin - Spectrophotometric method

Group Standards of the People's Republic of China

Professional Standard - Chemical Industry

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

Hebei Provincial Standard of the People's Republic of China

  • DB13/T 1091-2009 Determination of acid protease activity in enzyme preparations for feed - spectrophotometric method
  • DB13/T 1098-2009 Determination of protein in feed
  • DB13/T 812-2006 Determination of protein solubility in soybeans and their products

农业农村部

  • NY/T 3493-2019 Agricultural biomass raw materials. Determination of crude protein
  • NY/T 3608-2020 Determination of collagen content in livestock and poultry bone—Colorimetric method
  • NY/T 3298-2018 Determination of crude protein content in vegetable oilseeds—Near-infrared spectroscopy method

Professional Standard - Public Safety Standards

  • GA/T 2073-2023 Forensic sciences-Examination methods for carboxyhaemoglobin in blood samples-Spectrophotometry
  • GA/T 52-1993 Quality grading for protein-foam fire extinguishing agent and fluoroprotein-foam fire extinguishing agent

国家市场监督管理总局、中国国家标准化管理委员会

Jilin Provincial Standard of the People's Republic of China

  • DB22/T 1819-2013 Spectrophotometric method for the determination of acid protease activity in enzyme preparations for feed

Taiwan Provincial Standard of the People's Republic of China

工业和信息化部/国家能源局

International Organization for Standardization (ISO)

  • 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 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 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
  • ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
  • ISO 5739:2003|IDF 107:2003 Determination of casein and caseinate coke particles and foreign matter content
  • 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)

Association Francaise de Normalisation

  • 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 V03-768*NF EN 15948:2020 Cereals - Determination of moisture and protein - Method using Near-Infrared Spectroscopy in whole kernels
  • NF V03-768:2015 Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels
  • NF V03-768:2012 Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels.
  • NF V04-387:1985 Caseins and caseinates. Determination of protein content (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)

British Standards Institution (BSI)

  • BS ISO 5548:2004 Caseins and caseinates - Determination of lactose content - Photometric methods
  • BS 3985:2003(2008) Haemiglobincyanide (cyanmethaemoglobin) preparation as a standard for spectrometric haemoglobinometry
  • 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 3985:2003 Haemiglobincyanide (cyanmethaemoglobin) preparation as a standard for spectrometric haemoglobinometry
  • BS ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
  • 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 15948:2015 Cereals. Determination of moisture and protein. Method using Near-Infrared-Spectroscopy in whole kernels

GSO

  • 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 2101:2010 Protein-Rich concentrated Nutrient Supplementary foods
  • 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 1374:2021 Edible Casein And Caseinates
  • BH GSO 1374:2022 Edible Casein And Caseinates

Korean Agency for Technology and Standards (KATS)

  • KS H ISO 5548:2020 Caseins and caseinates-Determination of lactose content-Photometric method
  • KS H ISO 5548:2006 Caseins and caseinates-Determination of lactose content-Photometric method
  • 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 5549-2006(2016) Caseins and caseinates-Determination of protein content(Reference method)
  • KS H ISO 8195:2001 Caseins and caseinates-Determination of nitrate and nitrite contents-Method by cadmium reduction and spectrometry
  • KS H ISO 8195:2006 Caseins and caseinates-Determination of nitrate and nitrite contents-Method by cadmium reduction and spectrometry
  • KS H ISO 5739:2006 Caseins and caseinates-Determination of scorched particles content
  • 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

KR-KS

  • KS H ISO 5548-2020 Caseins and caseinates-Determination of lactose content-Photometric method
  • KS H ISO 5549-2021 Caseins and caseinates — Determination of protein content(Reference method)
  • KS H ISO 8195-2001 Caseins and caseinates-Determination of nitrate and nitrite contents-Method by cadmium reduction and spectrometry
  • KS H 1204-2022 Testing method for crude proteins content

SCC

  • BS 3985:1978 Specification for cyanmethaemoglobin (haemiglobincyanide) solution for photometric haemoglobinometry
  • BS 3985:1966 Specification for cyanmethaemoglobin solution for photometric haemoglobinometry
  • DIN 10470 E:2010 Draft Document - Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
  • 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 15948:2020 Cereals — Determination of moisture and protein — Method using Near-Infrared Spectroscopy in whole kernels
  • NS-EN 15948:2012 Cereals — Determination of moisture and protein — Method using Near-Infrared-Spectroscopy in whole kernels
  • NS-EN 15948:2015 Cereals — Determination of moisture and protein — Method using Near-Infrared-Spectroscopy in whole kernels
  • AENOR UNE 23053:1971 BLOOD TRANSFUSION. ALBUMIN
  • 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-...

Japanese Industrial Standards Committee (JISC)

German Institute for Standardization

  • 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 10464:1994 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus method
  • DIN 10470:2011-07 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 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 ISO 5544:2020 Caseins - Determination of \

Society of Automotive Engineers (SAE)

RU-GOST R

RO-ASRO

  • STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
  • 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 6182/44-1977 WIN E Determination of proteins

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 0111-8-2002 Testing methods for casein and caseinates - Determination of titratable acidity

Spanish Association for Standardization (UNE)

  • UNE 64102:1977 MIXED FEEDS AND RAW MATERIALS. TOTAL PROTEIN (RAW 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 34-871-1986 Processed cheese. Determination of protein content

IN-BIS

  • IS 11963-1987 Photometric method for determination of lactose content in casein and caseinate
  • IS 9095-1979 Specifications for protein gummies
  • IS 7482-1989 Protein Drinks—Specifications
  • IS 1167-1965 Casein specifications (food quality)
  • IS 8665-1977 Specification for protein fortified bread
  • IS 13650-1993 Glass containers for proteinized food
  • IS 7487-1986 Specifications for protein-rich cookies
  • IS 6557-1972 Protein Flakes Specifications Not Food Quality
  • IS 9038-1979 Specification for Renewable Protein Beverages and Food Products
  • IS 7481-1974 How to measure protein efficiency ratio (PER)
  • IS 2006-1988 Methods for the quantitative chemical analysis of binary mixtures of protein fibers and certain other non-protein fibers

Lithuanian Standards Office

  • LST ISO 5548:2004 Caseins and caseinates. Determination of lactose content. Photometric method (idt ISO 5548:2004)
  • LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)

AT-ON

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

HU-MSZT

European Committee for Standardization (CEN)

  • EN 15948:2012 Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels

Standard Association of Australia (SAA)

  • AS 1871.9:1976 List of methods for examination of waters Nitrogen (albuminoid)
  • 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 K89:1953 Protein adhesives for plywood

American Society for Testing and Materials (ASTM)

  • ASTM D6188-17 Standard Test Method for Viscosity of Cellulose by Cuprammonium Ball Fall

CU-NC

  • NC 86-05-1984 Cereals. Flours Determination of Protein
  • NC 57-98-1-1986 Clinical Methods and Aids. Photometric Determination of Hemoglobin in Blood. Chemical Analysis Method

Danish Standards Foundation

  • DS/EN 15948:2020 Cereals – Determination of moisture and protein – Method using Near-Infrared Spectroscopy in whole kernels
  • DS/ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
  • DS 2253:1983 Water quality. Determination of aerobic proteclytic bacteria at 30 centigrades

PL-PKN

  • 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

International Dairy Federation (IDF)

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

GOSTR

  • GOST 34621-2019 Foods for special dietary uses. Dry protein, protein-carbohydrate and carbohydrate-protein drinks for sports nutrition. General specifications

SAE - SAE International