The principle of gold production by white phosphorus reduction method

The principle of gold production by white phosphorus reduction method, Total:259 items.

The international standard classification for "The principle of gold production by white phosphorus reduction method" includes: Solid fuels , Products of the chemical industry in general , Chromium ores , Iron ores , Powder metallurgy , Cadmium, cobalt and their alloys , Metalliferous minerals , Other non-ferrous metals and their alloys .

The Chinese standard classification for "The principle of gold production by white phosphorus reduction method" includes: Coke , Basic standards and general methods for dye , Chrome ore , Iron ore , Powder metallurgy analysis method , Steel and iron alloy analysis method , Rare metals and their alloys analysis method , Metal and alloy powder , Welding and cutting , Powder metallurgy material and product , Rare refractory metals and their compounds , Hydrogeological survey .

Professional Standard - Ferrous Metallurgy

YB/T 4508-2016 Iron powder for titanium dioxide via sulfate process

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

GB/T 3311-1982 Determination of cerium in cerium-tungsten alloys--Oxidation-reduction volumetry
GB/T 5158.4-2011 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction
GB/T 5158.2-2011 Metallic powders—Determination of oxygen content by reduction methods—Part 2:Loss of mass on hydrogen reduction(hydrogen loss)
GB/T 24223-2009 Chromium ores—Determination of phosphorus content—Reduced molybdophosphate photometric method
GB/T 4469-2006 Vat dyes - determination of the reduction speed - Steam process
GB/T 5158.4-2001 Metallic powders--Determination of total oxygen content by reduction-extraction
GB/T 35069-2018 Coke--Determination of phosphorus content--Reduced molybdophosphate spectrophotometric method
GB 223.32-1984 Methods for chemical analysis of iron, steel and alloy--The hypophosphite reduction-iodimetric method for the determination of arsenic content
GB/T 13241-1991 Iron ores-Determination of reducibility
GB/T 24235-2009 Iron ores for shaft direct-reduction feedstocks—Determination of the low temperature reduction-disintegration index and degree of metallization
GB/T 24236-2009 Iron ores for shaft direct-reduction feedstocks—Determination of the reducibility index final degree of reduction and degree of metallization
GB/T 223.32-1994 Methods for Chemical Analysis of Iron, Steel and Alloy - The Hypophosphite Reduction-Iodimetric Method for the Determination of Arsenic Content
GB/T 5158.3-2011 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen

未注明发布机构

DIN EN ISO 4491-2 E:2022-06 Determination of oxygen content in metal powders by reduction method Part 2: Mass loss during hydrogen reduction (draft)
DIN 50942:1996 Phosphating of metals – process principles, test methods
DIN EN ISO 4491-4 E:2019-03 Determination of Oxygen Content in Metal Powders by Reduction Method Part 4: Determination of Total Oxygen Content by Reduction and Extraction Method (Draft)

Professional Standard - Machinery

JB/T 8063.5-1996 Powder metallurgy materials and products chemical analysis method Determination of tin in copper-based materials and products (sodium hypophosphite reduction-potassium iodate titration method)
JB/T 7520.5-1994 Chemical Analysis Method for Phosphorus Copper Brazing Filler Metal - Determination of Tin Content with Hypophosphite Reducing Volumetric Method
JB/T 8063.5-2011 Methods for chemical analysis of powder metallurgy materials and products —Part 5：The secondary sodium phosphate reduction – potassium iodate titrimetric method for the determination of tin in copper –based materials and products

Professional Standard - Non-ferrous Metal

YS/T 230.5-1994 High pure indium--Determination of sulphur content
YS/T 500-2006 Determination of cerium in cerium-tungsten alloys -- oxidation-reduction volumetry
YS/T 500-2013 Determination of Cerium Content in Cerium-tungsten Alloys Oxidation - Reduction Titration

Taiwan Provincial Standard of the People's Republic of China

CNS 10123-1983 Method for Determining Phosphorus Content in Natural and Artificial Cryolite and Aluminium Fluoride for Industrial Use (Reduced Molybdophosphate Photometric Method)
CNS 9412-1994 Method of Test for Phosphate in Water and Wastewater (Absorption Spectrophotometry after Ascorbic Acid Reduction)

Yunnan Provincial Standard of the People's Republic of China

DB53/T 639.4-2014 Methods for chemical analysis of direct reduced iron - Part 4: Determination of phosphorus content Bismuth phosphomolybdenum blue spectrophotometric method

Professional Standard - Agriculture

GB/T 5009.7-1985 Determination method of reducing sugar in food
NY/T 4312-2023 Continuously cropping obstacle management in protected field-Intensively reductive soil treatment

Professional Standard - Geology

DZ/T 0064.78-1993 Groundwater quality test methods - the determination of tritium with metallic zinc reduction method

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 13241-2017 Iron ores--Determination of reducibility

Professional Standard - Environmental Protection

HJ 546-2009 Ambient air - Determination of phosphorus pentoxide - Molybdenum blue ascorbiaccid to deoxidize spectrophotometric method

Professional Standard - Electricity

DL/T 1480-2015 Test Method for Oxidation-reduction Potential of Water(ASTM D 1498-08,Stanadrd Test Method for Oxidation-reduction Potential of Water,MOD)

International Organization for Standardization (ISO)

ISO 9438:1993 Metallurgical-grade fluorspar; determination of total phosphorus content; reduced-molybdophosphate spectrometric method
ISO 9438:1989 Metallurgical-grade fluorspar — Determination of total phosphorus content — Reduced molybdophosphate spectrometric method
ISO 11258:1999 Iron ores - Determination of reducibility and metallization of feedstock for direct reduction by gas reforming processes
ISO 6127:1981 Chromium ores; Determination of phosphorus content; Reduced molybdophosphate photometric method
ISO 622:2016 Solid mineral fuels - Determination of phosphorus content - Reduced molybdophosphate photometric method
ISO 622:1981 Solid mineral fuels; Determination of phorphorus content; Reduced molybdophosphate photometric method
ISO/CD 622:1976 Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method
ISO 4491-3:1989 Metallic powders; determination of oxygen content by reduction methods; part 3: hydrogen-reducible oxygen
ISO 10835:1995 Direct reduced iron - Sampling and sample preparation - Manual methods for reduced pellets and lump ores
ISO 4491-3:1997 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen
ISO 11258:2007 Iron ores for shaft direct-reduction feedstocks - Determination of the reducibility index, final degree of reduction and degree of metallization
ISO 11258:2015 Iron ores for shaft direct-reduction feedstocks - Determination of the reducibility index, final degree of reduction and degree of metallization
ISO 6676:1993 Acid-grade and ceramic-grade fluorspar; determination of total phosphorus content; reduced-molybdophosphate spectrometric method
ISO 11257:1998 Iron ores - Determination of disintegration and metallization of feedstock for direct reduction by gas reforming processes
ISO 2997:1974 Phosphoric acid for industrial use; Determination of sulphate content; Method by reduction and titrimetry
ISO 4491-2:1997 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
ISO 4491-4:2019 Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction
ISO 4491-2:2023 Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
ISO 2998:1994 Sodium tripolyphosphate and sodium pyrophosphate for industrial use; Determination of orthophosphate content; Photometric method using the reduced molybdophosphate
ISO 4491-4:2013 Metallic powders.Determination of oxygen content by reduction methods.Part 4: Total oxygen by reduction-extraction
ISO 4491-4:1989 Metallic powders; determination of oxygen content by reduction methods; part 4: total oxygen by reduction-extraction
ISO 2998:1974 Sodium tripolyphosphate and sodium pyrophosphate for industrial use; Determination of orthophosphate content; Photometric method using the reduced molybdophosphate
ISO 6676:1990 Acid-grade and ceramic-grade fluorspar — Determination of total phosphorus content — Reduced-molybdophosphate spectrometric method
ISO 11257:2022 Iron ores for shaft direct-reduction feedstocks — Determination of the low-temperature reduction-disintegration index and degree of metallization
ISO 4491-2:1989 Metallic powders; determination of oxygen content by reduction methods; part 2: loss of mass on hydrogen reduction (hydrogen loss)
ISO 7058:1983 Phosphoric acid for industrial use; Determination of higher soluble sulfate contents; Titrimetric method after reduction
ISO 2829:1973 Aluminium oxide primarily used for the production of aluminium; Determination of phosphorus content; Reduced phosphomolybdate spectrophotometric method
ISO 4493:1981 Metallic powders — Determination of hydrogen reducible oxygen content
ISO 5930:1979 Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of phosphorus content; Reduced molybdophosphate photometric method
ISO 11256:1998 Iron ore pellets - Determination of clustering of feedstock for direct reduction by gas reforming processes
ISO 11257:2015 Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization
ISO 11257:2007 Iron ores for shaft direct-reduction feedstocks - Determination of the low-temperature reduction-disintegration index and degree of metallization
ISO 5416:1987 Direct reduced iron; Determination of metallic iron content; Bromine-methanol titrimetric method
ISO 5416:2006 Direct reduced iron - Determination of metallic iron - Bromine-methanol titrimetric method
ISO 5416:1997 Direct reduced iron - Determination of metallic iron content - Bromine-methanol titrimetric method

GSO

GSO ISO 6127:2017 Chromium ores -- Determination of phosphorus content -- Reduced molybdophosphate photometric method
GSO ISO 2829:2013 Aluminium oxide primarily used for the production of aluminium -- Determination of phosphorus content -- Reduced phosphomolybdate spectrophotometric method
OS GSO ISO 11258:2013 Iron ores for shaft direct-reduction feedstocks -- Determination of the reducibility index, final degree of reduction and degree of metallization
GSO ISO 622:2013 Solid mineral fuels - Determination of phorphorus content - Reduced molybdophosphate photometric method
OS GSO ISO 4491-3:2016 Metallic powders -- Determination of oxygen content by reduction methods -- Part 3: Hydrogen-reducible oxygen
GSO ISO 4491-3:2016 Metallic powders -- Determination of oxygen content by reduction methods -- Part 3: Hydrogen-reducible oxygen
OS GSO ISO 622:2013 Solid mineral fuels - Determination of phorphorus content - Reduced molybdophosphate photometric method
OS GSO ISO 2997:2015 Phosphoric acid for industrial use -- Determination of sulphate content -- Method by reduction and titrimetry
GSO ISO 2997:2015 Phosphoric acid for industrial use -- Determination of sulphate content -- Method by reduction and titrimetry
BH GSO ISO 2997:2016 Phosphoric acid for industrial use -- Determination of sulphate content -- Method by reduction and titrimetry
BH GSO ISO 11257:2016 Iron ores for shaft direct-reduction feedstocks -- Determination of the low-temperature reduction-disintegration index and degree of metallization
GSO ISO 4696-2:2013 Iron ores for blast furnace feedstocks -- Determination of low-temperature reduction-disintegration indices by static method -- Part 2: Reduction with CO and N2
GSO ISO 4696-1:2013 Iron ores for blast furnace feedstocks -- Determination of low-temperature reduction-disintegration indices by static method -- Part 1: Reduction with CO, CO2, H2 and N2
OS GSO ISO 2829:2013 Aluminium oxide primarily used for the production of aluminium -- Determination of phosphorus content -- Reduced phosphomolybdate spectrophotometric method
BH GSO ISO 2829:2016 Aluminium oxide primarily used for the production of aluminium -- Determination of phosphorus content -- Reduced phosphomolybdate spectrophotometric method
GSO ISO 5416:2013 Direct reduced iron -- Determination of metallic iron -- Bromine-methanol titrimetric method
GSO ISO 5930:2013 Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of phosphorus content -- Reduced molybdophosphate photometric method
BH GSO ISO 5930:2016 Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of phosphorus content -- Reduced molybdophosphate photometric method

Korean Agency for Technology and Standards (KATS)

KS E ISO 6127-2002(2017) Chromium ores－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS E ISO 6127-2022 Chromium ores－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS E ISO 6127-2002(2022) Chromium ores－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS E ISO 6127:2002 Chromium ores－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS M ISO 2829:2002 Aluminium oxide primarily used for the production of aluminium-Determination of phosphorus content-Reduced phosphomolybdate spectrophotometric method
KS M ISO 2829:2013 Aluminium oxide primarily used for the production of aluminium－Determination of phosphorus content－Reduced phosphomolybdate spectrophotometric method
KS E ISO 11258-2022 Iron ores for shaft direct-reduction feedstocks－Determination of the reducibility index, final degree of reduction and degree of metallization
KS E ISO 11258-2017(2022) Iron ores for shaft direct-reduction feedstocks－Determination of the reducibility index, final degree of reduction and degree of metallization
KS E ISO 622-2023 Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method
KS E ISO 622:2018 Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method
KS D ISO 4491-3:2008 Metallic powders-Determination of oxygen content by reduction methods-Part 3:Hydrogen reducible oxygen
KS E ISO 622:2003 Solid mineral fuels－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS D ISO 4491-3-2023 Metallic powders - Determination of oxygen content by reduction methods Part 3 : Hydrogen reducible oxygen
KS M ISO 2997-2017(2022) Phosphoric acid for industrial use－Determination of sulphate content－Method by reduction and titrimetry
KS D ISO 4491-4-2023 Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS M ISO 2997-2022 Phosphoric acid for industrial use－Determination of sulphate content－Method by reduction and titrimetry
KS D ISO 4491-4:2003 Metallic powders-Determination of oxygen content by reduction methods-Part 4:Total oxygen by reduction-extraction
KS D ISO 4491-3-2008(2018) Metallic powders - Determination of oxygen content by reduction methods Part 3 : Hydrogen reducible oxygen
KS M ISO 2997:2012 Phosphoric acid for industrial use－Determination of sulphate content－Method by reduction and titrimetry
KS E ISO 10835:2008 Direct reduced iron and hot briquetted iron-Sampling and sample preparation
KS E ISO 11257:2017 Iron ores for shaft direct-reduction feedstocks－Determination of the low-temperature reduction-disintegration index and degree of metallization
KS E ISO 11257-2022 Iron ores for shaft direct-reduction feedstocks－Determination of the low-temperature reduction-disintegration index and degree of metallization
KS D ISO 4491-4-2003(2018) Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS M ISO 2997:2017 Phosphoric acid for industrial use－Determination of sulphate content－Method by reduction and titrimetry
KS D ISO 4491-2:2008 Metallic powders-Determination of oxygen content by reduction methods-Part 2:Loss of mass on hydrogen reduction (hydrogen loss)
KS E ISO 11257-2017(2022) Iron ores for shaft direct-reduction feedstocks－Determination of the low-temperature reduction-disintegration index and degree of metallization
KS D ISO 4491-2-2023 Metallic powders－Determination of oxygen content by reduction methods－Part 2：Loss of mass on hydrogen reduction (hydrogen loss)
KS D ISO 4491-2-2008(2018) Metallic powders－Determination of oxygen content by reduction methods－Part 2：Loss of mass on hydrogen reduction (hydrogen loss)
KS M ISO 2829-2002(2012) Aluminium oxide primarily used for the production of aluminium－Determination of phosphorus content－Reduced phosphomolybdate spectrophotometric method
KS M ISO 2829-2013 Aluminium oxide primarily used for the production of aluminium－Determination of phosphorus content－Reduced phosphomolybdate spectrophotometric method
KS D ISO 11489-2002(2017) Determination of platinum in platinum jewellery alloys－Gravimetric determination by reduction with mercury(Ⅰ) chloride
KS E 3035-2008 Iron ores－Determination of reducibility
KS E ISO 5416:2021 Direct reduced iron — Determination of metallic iron —Bromine-methanol titrimetric method
KS M ISO 5930-2013 Cryolite, natural and artificial, and aluminium fluoride for industrial use－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS M ISO 5930:2003 Cryolite, natural and artificial, and aluminium fluoride for industrial use-Determination of phosphorus content-Reduced molybdophosphate photometric method
KS M ISO 5930-2003(2008) Cryolite, natural and artificial, and aluminium fluoride for industrial use－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS M ISO 5930:2013 Cryolite, natural and artificial, and aluminium fluoride for industrial use－Determination of phosphorus content－Reduced molybdophosphate photometric method
KS D ISO 11489-2022 Determination of platinum in platinum jewellery alloys－Gravimetric determination by reduction with mercury(Ⅰ) chloride
KS H ISO 8195-2006 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS E ISO 5416:2011 Direct reduced iron－Determination of metallic iron－Bromine-methanol titrimetric method

British Standards Institution (BSI)

24/30474179 DC BS ISO 622 Coal and coke - Determination of phosphorus - Reduced molybdophosphate photometric method
BS EN ISO 4491-4:2019 Metallic powders. Determination of oxygen content by reduction methods. Total oxygen by reduction-extraction
BS EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Hydrogen-reducible oxygen
BS ISO 622:2016 Solid mineral fuels. Determination of phosphorus content. Reduced molybdophosphate photometric method
BS EN ISO 4491-4:2013 Metallic powders. Determination of oxygen content by reduction methods. Total oxygen by reduction-extraction
BS ISO 11258:2015 Iron ores for shaft direct-reduction feedstocks. Determination of the reducibility index, final degree of reduction and degree of metallization
BS ISO 11258:2007 Iron ores for shaft direct-reduction feedstocks. Determination of the reducibility index, final degree of reduction and degree of metallization
BS EN ISO 4491-2:1999 Metallic powders - Determination of oxygen content by reduction methods - Loss of mass on hydrogen reduction (hydrogen loss)
BS ISO 11257:2022 Iron ores for shaft direct-reduction feedstocks. Determination of the low-temperature reduction-disintegration index and degree of metallization
BS 3338-16:1965(2011) Method for The determination of tin in white metal bearing alloys (Nickel coil reduction method) — Methods for the sampling and analysis oftin and tin alloys
21/30436656 DC BS ISO 11257. Iron ores for shaft direct-reduction feedstocks. Determination of the low-temperature reduction-disintegration index and degree of metallization
BS EN ISO 11489:1995(1999) Determination of platinum in platinum jewellery alloys — Gravimetric method after reduction with mercury (I) chloride
BS ISO 5416:2006(2009) Direct reduced iron — Determination of metallic iron — Bromine - methanol titrimetric method
BS EN 24491-1:1993 Metallic powders - Determination of oxygen content by reduction methods - General guidelines
BS ISO 11257:2007 Iron ores for shaft direct-reduction feedstocks. Determination of the low-temperature reduction-disintegration index and degree of metallization
BS ISO 11257:2015 Iron ores for shaft direct-reduction feedstocks. Determination of the low-temperature reduction-disintegration index and degree of metallization
BS EN ISO 4491-1:2023 Metallic powders. Determination of oxygen content by reduction methods - General guidelines

YU-JUS

JUS H.B8.611-1979 Ahiminium oxide primarily used for the production of aluminium. Determination of phosphorus content - Reduced phosphomofybdate spectrophotometric method
JUS H.B8.195-1980 Aluminium Jluoride for industrial use. Determination of phosphorus content. Reduced molybdo- phusphate spectrophotometric method
JUS H.G8.480-1991 Reagents. Orthophosphoric aci?. Determination of permanganate reducing substances content. Volumetric method
JUS H.B8.350-1982 Boric acid for industrial use. Determination of phosphate content Reduced phosphomolybdate spec trop ho tome trk: method

CZ-CSN

CSN ISO 9438:1992 Metallurgical-grade fluorspar - Determination of total phosphorus content - Reduced molybdophosphate spectrometric method
CSN 560160-7-2000 Methods for testing of sugar products. Determination of reducing agents
CSN ISO 4491-4:1993 Metallic powders. Determination of oxygen content by reduction methods
CSN 68 4066-1983 Pure chemicals. Preparation of measuring solutions for oxidation-reduction titrations

Association Francaise de Normalisation

NF EN ISO 4491-3:2006 Metal powders - Determination of oxygen by reduction methods - Part 3: oxygen reducible by hydrogen
NF EN ISO 4491-4:2019 Metal powders - Determination of oxygen by reduction methods - Part 4: total oxygen by reduction-extraction
NF A95-181-3*NF EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 3 : hydrogen-reducible oxygen
NF A95-181-3:1989 Metallic powders. Determination of oxygen content by reduction methods. Part 3 : hydrogen-reductible oxygen.
NF T20-215:1973 Aluminium oxide primarily used for the production of aluminium. Determination of phosphorous. Reduced phosphomolybdate spectrophotometric method.
NF EN ISO 4491-2:2023 Metallic powders - Determination of oxygen by reduction methods - Part 2: loss of mass by reduction in hydrogen (loss in hydrogen)
NF T20-487:1973 SODIUM TRIPOLYPHOSPHATE AND PYROPHOSPHATE FOR INDUSTRIAL USE ; DETERMINATION OF ORTHOPHOSPHATE; PHOTOMETRIC METHOD USING REDUCED PHOSPHOMOLYBDIC COMPLEX.
NF A95-181-4*NF EN ISO 4491-4:2019 Metallic powders - Determination of oxygen content by reduction methods - Part 4 : total oxygen by reduction-extraction
NF A95-181-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: total oxygen by reduction-extraction
NF A95-181-2*NF EN ISO 4491-2:1999 Metallic powders. Determination of oxygen content by reduction methods. Part 2 : loss of mass on hydrogen reduction (hydrogen loss).
NF T20-471:1973 Phosphoric acid for industrial use. Determination of sulphates. Titrimetric method after reduction.
NF A95-181-4:2013 Metallic powders - Determination of oxygen content by reduction methods - Part 4: total oxygen by reduction-extraction
NF ISO 5416:1988 Pre-reduced iron ores - Determination of metallic iron - Bromine-methanol titrimetric method
NF T20-469:1984 Phosphoric acid for industrial use. Determination of higher soluble sulfate contents. Titrimetric method after reduction.
NF A20-408*NF ISO 5416:1988 Direct reduced iron. Determination of metallic iron content. Brimine-methanol titrimetric method.

AR-IRAM

IRAM 14 007-1958 Determination of reducing sugars and non-reducing sugars in milk and dairy products

SCC

BS EN 24491-4:1993 Metallic powders. Determination of oxygen content by reduction methods-Total oxygen by reduction-extraction
DANSK DS/EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen
05/30132742 DC ISO 11258. Iron ores for shaft direct-reduction feedstocks. Determination of the reducibility index, final degree of reduction and degree of metallization
BS EN 24491-2:1993 Metallic powders. Determination of oxygen content by reduction methods-Loss of mass on hydrogen reduction (hydrogen loss)
DANSK DS/ISO 4491-4:2019 Metallic powders – Determination of oxygen content by reduction methods – Part 4: Total oxygen by reduction-extraction
AENOR UNE 55551:1978 Surface agents. Sodium tripolyphosphate and pyrophosphate used as raw materials for formula detergents. Determination of orthophosphate. Reduced phosphomolybdate photometric method.
NS-EN ISO 4491-3:2006 Metallic powders — Determination of oxygen content by reduction methods — Part 3: Hydrogen-reducible oxygen (ISO 4491-3:1997)
NS-EN ISO 4491-4:2013 Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2013)
DANSK DS/EN ISO 4491-4:2019 Metallic powders – Determination of oxygen content by reduction methods – Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019)
NS-EN ISO 4491-4:2019 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019)
NS-EN 24491-4:1993 Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction (ISO 4491-4:1989)
UNE-EN 24491-4:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:1989)
NS-ISO 4491-2:1989 Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
DANSK DS/ISO 4491-2:2023 Metallic powders – Determination of oxygen content by reduction methods – Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
DANSK DS/EN ISO 4491-2:2000 Metallic powders – Determination of oxygen content by reduction methods – Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
05/30132739 DC ISO 11257. Iron ores for shaft direct-reduction feedstocks. Determination of the low-temperature reduction-disintegration index and degree of metallization
DANSK DS/EN ISO 11489:1995 Determination of platinum in platinum jewellery alloys – Gravimetric method after reduction with mercury(I) chloride
BS 6598:1985 Method for determination of reducibility of iron ores
NS-EN ISO 4491-2:2023 Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)
NS-EN ISO 4491-2:1999 Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)
DIN EN ISO 4491-4 E:2019 Draft Document - Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO/FDIS 4491-4:2018); German and English version prEN ISO 4491-4:2018

German Institute for Standardization

DIN EN ISO 4491-3:2006-06 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen (ISO 4491-3:1997); German version EN ISO 4491-3:2006
DIN EN ISO 4491-4:2019-09 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019); German version EN ISO 4491-4:2019 / Note: Applies in conjunction with DIN ISO 4491-1 (1990-06).
DIN EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen (ISO 4491-3:1997); English version of DIN EN ISO 4491-3:2006-06
DIN ISO 4491-4:1990 Metallic powders; determination of oxygen content by reduction methods; total oxygen by reduction-extraction; identical with ISO 4491-4:1989
DIN ISO 4491-2:1998 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)
DIN EN ISO 4491-2:2023-07 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023); German version EN ISO 4491-2:2023
DIN EN ISO 4491-4:2019 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019)
DIN EN ISO 4491-2:2023 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)
DIN 38404-6:1984-05 German standard methods for the examination of water, waste water and sludge; physical and physico-chemical parameters (group C); determination of the oxidation reduction (redox) potential (C 6)

VN-TCVN

TCVN 6933-2001 Solid mineral fuels.Determination of phosphorus content.Reduced molybdophosphate photometric method
TCVN 254-2-2009 Solid mineral.Determination of phosphorus content.Part 2:Reduced molypdophosphate photometric method
TCVN 7815-2007 Direct reduced iron.Determination of metallic iron.Bromine-methanol titrimetric method
TCVN 6638-2000 Water quality.Determination of nitrogen.Catalytic digestion after reduction with devarda's alloy
TCVN 6960-2001 White sugar.Determination of reducing sugars by the Knight and Allen EDTA method.Official

ZA-SANS

SANS 52:2006 Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method

RU-GOST R

GOST 27417-1987 Metal powders. Methods for determination of oxygen
GOST 27417-1998 Metallic powders. Determination of total oxygen by reduction - extraction
GOST 18897-1973 Metal powder. Method for determination of metal powders losses while heating it in hydrogen
GOST 18897-1998 Metallic powders. Determination of oxygen content by reduction methods. Loss of mass on hydrogen reduction (hydrogen loss)
GOST 29006-1991 Metallic powders. Method for determination of hydrogen-reducible oxygen

KR-KS

KS E ISO 622-2018(2023) Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method
KS E ISO 622-2018 Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method
KS M ISO 2997-2017 Phosphoric acid for industrial use－Determination of sulphate content－Method by reduction and titrimetry
KS D ISO 4491-3-2008(2023) Metallic powders - Determination of oxygen content by reduction methods Part 3 : Hydrogen reducible oxygen
KS D ISO 4491-4-2003(2023) Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS E ISO 11257-2017 Iron ores for shaft direct-reduction feedstocks－Determination of the low-temperature reduction-disintegration index and degree of metallization
KS D ISO 4491-2-2008(2023) Metallic powders－Determination of oxygen content by reduction methods－Part 2：Loss of mass on hydrogen reduction (hydrogen loss)
KS E ISO 5416-2021 Direct reduced iron — Determination of metallic iron —Bromine-methanol titrimetric method

Danish Standards Foundation

DS/ISO 622:1983 Solid mineral fuels. Determination of phosphorus content. Reduced molybdophosphate photometric method
DS/EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen
DS/EN ISO 4491-4:2013 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction
DS/EN ISO 4491-2:2000 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
DS/EN 24491-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: Total oxygen by reduction-extraction
DS/EN 24491-2:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
DS/EN ISO 11489:1995 Determination of platinum in platinum jewellery alloys - Gravimetric method after reduction with mercury(I) chloride

European Committee for Standardization (CEN)

EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen
prEN 24491-4-1992 Metallic powders; determination of oxygen content by reduction methods; part 4: total oxyen by reduction-extraction (ISO 4491-4:1989)
EN ISO 4491-4:2013 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction
prEN 24491-2-1992 Metallic powders; determination of oxygen content by reduction methods; part 2: loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1989)
EN 24491-4:1993 Metallic Powders - Determination of Oxygen Content by Reduction Methods - Part 4: Total Oxygen by Reduction-Extraction (ISO 4491-4: 1989)
EN 24491-2:1993 Metallic Powders - Determination of Oxygen Content by Reduction Methods - Part 2: Loss of Mass on Hydrogen Reduction (Hydrogen Loss) (ISO 4491-2: 1989)
EN ISO 4491-2:2023 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)
EN ISO 4491-2:1999 Metallic Powders - Determination of Oxygen Content by Reduction Methods - Part 2: Loss of Mass on Hydrogen Reduction (Hydrogen Loss) [Superseded: CEN EN 24491-2]
FprEN ISO 4491-2 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO/FDIS 4491-2:2023)

IN-BIS

IS 5970-1970 Method for estimating the strength (reducing content) of dissolved vat dyes
IS 5644 Pt.4-1993 Metal powders - Determination of oxygen content by reduction method Part 4 Determination of total oxygen by reduction-extraction method
IS 8846-1989 Tobacco and tobacco products—Methods for determination of reducing sugars and sucrose

RO-ASRO

STAS SR EN 24491-4-1995 Metallic powders. Determination of oxygen content by reduction, methods. Part 4: Total oxygen by reduction-extraction
STAS SR EN 24491-2-1996 Metallic powders. Determination of oxygen content by reduction methods. Part 2: Loss of mass on hydrogen reduction (hydrogen loss)

SE-SIS

SIS SS 18 71 62-1984 Solid mineral fuels- Detrmination of phosphorus content - Reduced molybdophosphate photometric method

ES-UNE

UNE-EN ISO 4491-4:2020 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019)
UNE-EN ISO 4491-2:2000 ERRATUM:2006 Metallic powders. Determination of oxygen content by reduction methods. Part 2: Loss of mass on hydrogen reduction (Hydrogen loss) (ISO 4491-2:1997)
UNE-EN ISO 4491-2:2024 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)

Lithuanian Standards Office

LST EN ISO 4491-3:2006 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen (ISO 4491-3:1997)
LST EN 24491-4-2000 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:1989)
LST EN ISO 4491-2:2000 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)

AENOR

UNE-EN ISO 4491-3:2007 Metallic powders - Determination of oxygen content by reduction methods - Part 3: Hydrogen-reducible oxygen (ISO 4491-3:1997)
UNE 22144:1990 DIRECT REDUCED IRON. DETERMINATION OF METALLIC IRON CONTENT. TITRIMETRIC METHOD.
UNE-EN ISO 4491-2:2000 METALLIC POWDERS. DETERMINATION OF OXYGEN CONTENT BY REDUCTION METHODS. PART 2: LOSS OF MASS ON HYDROGEN REDUCTION (HYDROGEN LOSS) (ISO 4491-2:1997)
UNE-EN ISO 4491-4:2014 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2013)

American National Standards Institute （ANSI)

BS EN ISO 4491-2:2023 Metallic powders. Determination of oxygen content by reduction methods Loss of mass on hydrogen reduction (hydrogen loss) (British Standard)

TR-TSE

TS 1933-1975 PHOSPHOR1C ACID FOR ?NDUSTRIAI. USE DETERMINATION OF SULPHATE CONTENT- METHOD BY REDUCTION AND TITRIMETRY
TS 2054-1975 SODIUM TRIPOLYPHOSPHATE AND SODIUM PYROPHOSPHATE FOR INDUSTRIAL USE — DETERMIN ATION OF ORTHOPHOSPHATE CONTENT — PHOTOMETRIC METHOD USING THE REDUCED MOLYBDOPHOSPHATE

CEN - European Committee for Standardization

EN ISO 4491-4:2019 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction

PL-PKN

PN H04964-1991 Metallic powders. Determination of oxygen content by hydrogen-reducible method

BE-NBN

NBN T 03-263-1980 Phosphoric acid for industrial use - Determination of sulphate content - Method by reduction and titrimetry
NBN T 03-273-1985 Phosphoric acid for industrial use - Determination of higher soluble sulfate contents -Titrimetric method after reduction
NBN T 03-296-1980 Sodium tripolyphosphate and sodium pyrophosphate for industrial use - Determination of orthophosphate content - Photometric method using the reduced molybdophosphate
NBN T 03-419-1983 Aluminium oxide primarily used for the production of aluminium - Determination of phosphorus content - Reduced phosphomolybdate spectrophotometric method
NBN T 03-266-1980 .Phosphoric acid for industrial use - Determination of soluble silica content - Reduced molybdosilicate spectrophotometric method

NL-NEN

NEN-ISO 4491-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: Total oxygen by reduction-extraction (ISO 4491-4:1989)
NEN-ISO 4491-2:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1989)

Others: