Ways to Increase Protein Stability

Ways to Increase Protein Stability, Total:231 items.

The international standard classification for "Ways to Increase Protein Stability" includes: food products in general , Animal feeding stuffs , Edible oils and fats. Oilseeds , Fruits. Vegetables , Milk and processed milk products , Man-made fibres , Protection against crime , Medical Sciences and health care facilities in general .

The Chinese standard classification for "Ways to Increase Protein Stability" includes: Food sanitation , Basic standards and general methods , Livestock and poultry feed and additive , Oil crop and product , Melon, fruit and vegetable planting and product , Other cash crops , Cereal crop and forage crop in general , Food processing and products in general , Children foods , Chemical fibre in general , Crime judging technology , Basic standard and general method on forestry , Sanitation in general .

Professional Standard - Agriculture

GB 8856-1988 Method for Determination of Crude Protein in Fruit and Vegetable Products
GB/T 5009.5-1985 Method for determination of protein in foods
111药典四部-2015 0700 Other Determination Methods 0731 Determination of Protein Content
220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method
176药典三部-2010 Appendix Ⅵ ⅥB protein assay
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content
2330药典二部-2010 Appendix VII M Determination of protein content

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

GB/T 14771-1993 Method for determination of protein content in foods
GB/T 17811-2008 Determination of pepsin digestibility in animal protein feeds - Filtration method
GB/T 17811-1999 Determination of digestibility in animal protein feeds--Pepsin method
GB/T 8856-1988 Method for determination of crude protein in fruit and vegetable products
GB/T 5413.1-1997 Milk powder and formula foods for infant and young children-Determination of protein
GB/T 6432-1994 Method for the determination of crude protein in feedstuffs
GB/T 14489.2-1993 Method for determination of crude protein in oilseed
GB/T 5009.5-2003 Determination of protein in foods
GB/T 5511-1985 Inspection of grain and oilseeds--Methods for determination of crude protein
GB/T 28715-2012 Determination of acidic and neutral protease activity in feed additives—Spetrophotometric method
GB/T 15673-1995 Method for determination of crude protein in edible fungi

Professional Standard - Textile

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

Professional Standard - Public Safety Standards

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

未注明发布机构

DIN ISO 5544 E:2020-06 Caseins - Determination of "fixed ash" (Reference method)
DIN ISO 5546 E:2020-08 Caseins and caseinates - Determination of pH (Reference method)
DIN ISO 5550 E:2020-06 Caseins and caseinates - Determination of moisture content (Reference 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 ISO 5545 E:2020-06 Rennet caseins and caseinates - Determination of ash (Reference method)

Professional Standard - Light Industry

QB/T 4363-2012 Determination of Immunoglobulin Egg Yolk (IgY) Activity in Toothpastes

Taiwan Provincial Standard of the People's Republic of China

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 3449-1988 Methods of Test for Milk and Milk Products: The Quantitive Analysis of Protein
CNS 2770.5-1986 Method of Test for Feeds : Determination of Crude Protein

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

DB13/T 1098-2009 Determination of protein in feed

Agricultural Standard of the People's Republic of China

农业部869号公告-2-2007 Food safety detection of genetically modified organisms and derived products Method of target protein digestive stability in simulative gastric and intestinal fluid
农业部2031号公告-17-2013 Food safety detection of genetically modified organisms and derived products.Protein heat stability test

Jilin Provincial Standard of the People's Republic of China

DB22/T 294-2020 Method for identification of adulteration of crude protein in corn gluten meal

Professional Standard - Hygiene

WS 341-2011 Reference method for hemoglobin determination
WS/T 341-2011 Reference method for haemoglobinometry in human blood

National Health Commission of the People's Republic of China

WST 341:2011 Hemoglobin measurement reference method

Professional Standard - Commodity Inspection

SN/T 0803.9-1999 Oil bearing materials for import and export—Method for the determination of crude protein

Professional Standard - Chemical Industry

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

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 1686-2016 Determination method of metallothionein in plants

Group Standards of the People's Republic of China

T/ZGKSL 009-2023 Test method for determination of collagen secreted from human cells induced by recombinant collagen

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 0606:1993 Methods for quantitative analysis of transferrin
JIS K 0603:1992 Methods for quantitative analysis of immuno globulin

AT-ON

ONORM DIN 10454-1993 Determination of protein content of caseins and caseinates - Reference method
ONORM DIN 10456-1993 Determination of pH of caseins and caseinates - Reference method
ONORM DIN 10453-1993 Determination of water content of caseins and caseinates - Reference method

RU-GOST R

GOST 25179-1990 Milk. Methods for determination of protein
GOST 13979.3-1968 Oilcakes oil-meals. Methods of determination of soluble proteins
GOST R 51470-1999 Caseins and caseinates. Method for determination of protein content
GOST 28074-1989 Vegetable fodder. Method for the determination of crude protein solubility
GOST 28075-1989 Vegetable fodder. Method for the determination of crude protein splitting
GOST 25179-2014 Milk and milk products. Method for determination of protein
GOST R 53213-2008 Meat and meat products. Histological method of identification of plant protein additives
GOST R 51467-1999 Caseins and caseinates. Method for determination of pH
GOST 20264.2-1988 Enzyme preparations. Methods for determination of proteolytic activity
GOST 25011-1981 Meat and meat products. Methods of protein determination
GOST 25011-2017 Meat and meat products. Protein determination methods
GOST R 51464-1999 Caseins and caseinates. Method for determination of water content
GOST R 54662-2011 Cheeses and processed cheeses. Determination of protein mass fraction by the Kjeldahl method
GOST R 51466-1999 Caseins. Method for determination of "fixed ash" mass fraction
GOST 31978-2012 Caseins and caseinates. Method for determination of pH
GOST R 53974-2010 Enzyme preparations for food industry. Method for determination of proteolitic activity
GOST 10846-1991 Grain and products of its processing. Method for determination of protein
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST R 54478-2011 Grain. Methods of determination quantity and quality of gluten in wheat
GOST R 51463-1999 Rennet caseins and caseinates. Method for determination of ASH content
GOST R 51468-1999 Caseins. Method for determination of free acidity
GOST R 54756-2011 Milk and milk products. Мethod for determination of mass portion of whey protein with Kjeldahl method
GOST 31484-2012 Mixed feeds, protein-vitamin-mineral concentrates, premixes. Methods for determination of metallomagnetic impurity
GOST 11612.11-1985 Photomultipliers. Measuring method of instability
GOST 32148-2013 Foodstuffs of processed poultry eggs. Method for identification of poultry egg species

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 0111-12-2002 Testing methods for casein and caseinates - Determination of pH
CSN 57 0111-7-2002 Testing methods for casein and caseinates - Determination of ash
CSN 57 0111-3-2002 Testing methods for casein and caseinates - Determination of moisture
CSN 57 0111-8-2002 Testing methods for casein and caseinates - Determination of titratable acidity
CSN 56 0186 Cast.12-1981 Testing methods for beer. art 12. etermination of proteins
CSN 46 7092-27-1998 Testing methods for feeding stuffs - Part 27: Determination of the protein content
CSN 57 0111 Cast.9-1979 Testing methods for casein. Determination of solubility index
CSN 57 0111-1-2002 Testing methods for casein and caseinates - General regulations
CSN 57 0111-2-2002 Testing methods for casein and caseinates - Methods of samphng of Chemical analysis
CSN 57 0105 Cast.5-1984 Powdered and condensed milk products. Testing methods. Determination of protein content
CSN 57 0111 Cast.6-1985 Testing methods for casein. Determination of lactose
CSN 57 0111 Cast.10-1979 Testing methods for casein. Determination of purity
CSN 57 0111 Cast.11-1979 Testing methods for casein. Determination of colour

Korean Agency for Technology and Standards (KATS)

KS H 1204-2012 Testing method for crude proteins content
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 1204-2001 Testing method for crude proteins content
KS H 1204-2021 Testing method for crude proteins content
KS J 4201-2008 Methods for quantitative analysis of serum albumin
KS H ISO 5546:2006 Caseins and caseinates－Determination of pH(Reference method)
KS J 4201-2023 Methods for quantitative analysis of serum albumin
KS J 4201-2018 Methods for quantitative analysis of serum albumin
KS J 4202-2008 Methods for quantitative analysis of immunoglobulin
KS J 4202-2023 Methods for quantitative analysis of immunoglobulin
KS H ISO 5546-2006(2016) Caseins and caseinates－Determination of pH(Reference method)
KS H ISO 5739:2006 Caseins and caseinates－Determination of scorched particles content
KS A ISO 18901:2015 Imaging materials－Processed silver－gelatin type black－and－white films－Specification for stability
KS J 4205-2018 Methods for quantitative analysis of immobilized trypsin
KS A ISO 18901:2005 Imaging materials-Processed silver-gelatin type black-and-white films-Specification for stability
KS H ISO 5550-2007(2021) Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5546:2021 Caseins and caseinates — Determination of pH(Reference method)
KS J 4205-2008 Methods for quantitative analysis of immobilized trypsin
KS J 4205-2023 Methods for quantitative analysis of immobilized trypsin
KS J 4202-2018 Methods for quantitative analysis of immunoglobulin

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 5546-2021 Caseins and caseinates — Determination of pH(Reference method)

International Organization for Standardization (ISO)

ISO 5549:1978 Caseins and caseinates; Determination of protein content (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 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 5546:2010 Caseins and caseinates - Determination of pH (Reference method)
ISO 5546:2010 | IDF 115:2010 Caseins and caseinates — Determination of pH (Reference method)
ISO 5546:2010|IDF 115:2010 Determination of pH value of casein and caseinate (standard method)
ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
ISO 18901:2002 Imaging materials - Processed silver-gelatin type black-and-white film - Specifications for stability
ISO 18901:2010 Imaging materials - Processed silver-gelatin-type black-and-white films - Specifications for stability
ISO 5546:1979 Caseins and caseinates; Determination of pH (Reference method)
ISO 23319:2022 | IDF 250 Cheese and processed cheese products, caseins and caseinates — Determination of fat content — Gravimetric method
ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
ISO 23319:2022 | IDF 250:2022 Cheese and processed cheese products, caseins and caseinates — Determination of fat content — Gravimetric method
ISO 5739:2003|IDF 107:2003 Determination of casein and caseinate coke particles and foreign matter content

IN-BIS

IS 7481-1974 How to measure protein efficiency ratio (PER)
IS 7219-1973 Methods for determination of protein in food and feed
IS 2006-1988 Methods for the quantitative chemical analysis of binary mixtures of protein fibers and certain other non-protein fibers
IS 11962-1987 Method for determination of ash content in chymosin casein and caseinate (reference method)
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

ES-AENOR

UNE 34-871-1986 Processed cheese. Determination of protein content
UNE 34-835-1985 milk. Protein content determination by aminoblack method (conventional method)

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 ISO 5546:2010 Caseins and caseinates - Determination of pH (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 5545:2008 Rennet caseins and caseinates - Determination of ash (Reference method)
BS ISO 5544:2008 Caseins - Determination of "fixed ash" (Reference method)
BS ISO 18901:2010 Imaging materials - Processed silver-gelatin-type black-and-white films - Specifications for stability
BS ISO 5739:2003 Caseins and caseinates - Determination of contents of scorched particles and of extraneous matter
BS 6248-11:1987 Caseins and caseinates. Method for determination of nitrate and nitrite contents
BS EN ISO 23319:2022 Cheese and processed cheese products, caseins and caseinates. Determination of fat content. Gravimetric method

GOSTR

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

SCC

UNE 34400-7:1967 TEST METHODS OF WHEAT FLOUR. PROTEIN DETERMINATION
AENOR UNE 34400-7:1967 Test methods for wheat flour. Determination of protein.
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)
AS 1871.9:1976 List of methods for examination of waters Nitrogen (albuminoid)
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)
BS 6248-9:1984 Caseins and caseinates-Method for the determination of scorched particles
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)
BS 6248-10:1986 Caseins and caseinates-Method for determination of fat (gravimetric reference method)
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-...
AENOR UNE 77059:2002 Water quality. Determination of aluminum. Colorimetric method with eriochromocyanin R.
AS Z24.4.1:1968 Methods of test for pressure sensitive adhesive tapes, Method 4.1: Stability - Accelerated ageing - Stability - Accelerated ageing
BS 4289-6:1986 Methods for the analysis of oilseeds-Determination of oil, moisture and volatile matter, and protein by infrared reflectance
BS 1417:1963 Methods for the sampling and analysis of acid casein
DANSK DS/ISO 23319:2022 Cheese and processed cheese products, caseins and caseinates – Determination of fat content – Gravimetric method
AS N60:1970 Methods for the sampling and analysis of acid and rennet caseins

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)

Lithuanian Standards Office

LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)
LST ISO 5546:2010 Caseins and caseinates - Determination of pH (Reference method) ( ISO 5546:2010, identical)

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)
UNE-EN ISO 23319:2022 Cheese and processed cheese products, caseins and caseinates - Determination of fat content - Gravimetric method (ISO 23319:2022)

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 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN 10470:2011 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN ISO 5546:2020-12 Caseins and caseinates - Determination of pH (Reference method) (ISO 5546:2010)
DIN ISO 5550:2020-12 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
DIN 10464:1994 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus 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 ISO 5546:2020 Caseins and caseinates - Determination of pH (Reference method) (ISO 5546:2010)
DIN EN ISO 23319:2023-01 Cheese and processed cheese products, caseins and caseinates - Determination of fat content - Gravimetric method (ISO 23319:2022); German version EN ISO 23319:2022
DIN ISO 18901:2007 Imaging materials - Processed silver-gelatin type black-and-white films - Specifications for stability (ISO 18901:2002)；English version of DIN ISO 18901:2007-06
DIN ISO 5545:2020-12 Rennet caseins and caseinates - Determination of ash (Reference method) (ISO 5545:2008)
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 5544:2020-12 Caseins - Determination of "fixed ash" (Reference method) (ISO 5544:2008)
DIN ISO 5550:2020 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
DIN ISO 5545:2020 Rennet caseins and caseinates - Determination of ash (Reference method) (ISO 5545:2008)

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.

Association Francaise de Normalisation

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 5546:2010 Caseins and caseinates - Determination of pH (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 ISO 5550:2007 Caseins and caseinates - Determination of moisture content (reference method)
NF ISO 5545:2008 Rennet caseins and caseinates - Determination of ash (Reference method)
NF EN ISO 23319:2022 Cheeses and processed cheeses, caseins and caseinates - Determination of fat content - Gravimetric method
NF ISO 5544:2008 Caseins - Determination of "fixed ashes" (Reference method)
NF V04-558*NF EN ISO 23319:2022 Cheese and processed cheese products, caseins and caseinates - Determination of fat content - Gravimetric method

RO-ASRO

STAS 2213/17-1976 SWEETS Determination of total proteinic content and milk proteinic substance content
STAS 6514-1975 FISH AND FISH PRODUCTS Determination of total proteic matters
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
SR ISO 5549:1996 Caseins and caseinates - Determination of protein content (Reference 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 5544:2015 Caseins -- Determination of " fixed ash " (Reference method)
OS GSO ISO 5546:2015 Caseins and caseinates -- Determination of pH (Reference method)
BH GSO ISO 23319:2023 Cheese and processed cheese products, caseins and caseinates — Determination of fat content — Gravimetric method
GSO ISO 5546:2015 Caseins and caseinates -- Determination of pH (Reference method)
GSO ISO 23319:2023 Cheese and processed cheese products, caseins and caseinates — Determination of fat content — Gravimetric method
BH GSO ISO 5546:2016 Caseins and caseinates -- Determination of pH (Reference method)

VN-TCVN

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 5461-1991 Synthetic detergents.Determination of proteinous activity
TCVN 5537-1991 Sweetened condensed milk.Determination of total protein content

American Society for Testing and Materials (ASTM)

ASTM D3048-89(1995)e1 Standard Test Method of Assay for Alkaline Protease
ASTM D3048-89(2009) Standard Test Method of Assay for Alkaline Protease
ASTM D3048-89(2016) Standard Test Method of Assay for Alkaline Protease
ASTM E1470-92(2006) Standard Test Method for Characterization of Proteins by Electrophoretic Mobility
ASTM D6188-17 Standard Test Method for Viscosity of Cellulose by Cuprammonium Ball Fall
ASTM D7818-12 Standard Test Method for Enumeration of Proteolytic Bacteria in Fresh (Uncured) Hides and Skins

AR-IRAM

IRAM 15 707-1963 How to measure plant protein in food

International Dairy Federation (IDF)

IDF 90-2008 Rennet caseins and caseinates - Determination of ash (Reference method)
IDF 78-2006 Caseins and caseinates. Determination of moisture content (Reference method)
IDF 89-2008 Caseins - Determination of "fixed ash" (Reference method)

CEN - European Committee for Standardization

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

BE-NBN

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

NL-NEN

NEN 3145-1966 Feeding stuffs. Methodsof analysis. Determination of crude protein

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)

Canadian General Standards Board （CGSB)

CGSB 1-GP-71 METH 30.6-1980 Methods of Testing Paints and Pigments Accelerated Stability Heat Stability

PT-IPQ

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

Others: