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)

Impurities

Impurities, Total:219 items.

The international standard classification for "Impurities" includes: Rubber compounding ingredients , Vegetables and derived products , food products in general , Milk and processed milk products , Rubber , Oilseeds , Animal and vegetable fats and oils , Fuel cells , Lubricants, industrial oils and related products , Biology. Botany. Zoology , Fruits. Vegetables and derived products in general , Aromatic hydrocarbons , Fruits. Vegetables , Chemical analysis , Products of the chemical industry in general , Petroleum products in general , Organic chemicals , Plastics , Semiconducting materials , Thermoplastic materials , Organic chemicals in general , Coffee and coffee substitutes , Aliphatic hydrocarbons , Natural gas , Fissile materials , Abrasives , Latex and raw rubber , Other pipeline components , Auxiliary materials and additives for plastics , Inorganic chemicals in general , Testing of metals , Alcohols. Ethers , Chemical analysis of metals , Non-metalliferous minerals , Buildings and installations for processing and storage of agricultural produce .

The Chinese standard classification for "Impurities" includes: Carbon black , Melon, fruit and vegetable planting and product , Papermaking in general , Basic standards and general methods , Children foods , Forestry chemical raw material , Oil crop and product , Food processing and products in general , Electrochemical power source , Lubricating grease , Biological agent and blood products , Cash crop in general , Basic organic chemicals , Grease and oil processing and products , Chemical reagent in general , Basic standards and general methods for dye , Petroleum products in general , Basic standards and general methods for synthetic resin and plastic , General organic chemicals , Semimetal and semiconductor material in general , Milk and dairy products , Synthetic resin and plastic , Tobacco, beverage crop and product , Organic chemicals in general , Heat supply, air supply, air conditioning and refrigerating engineering in general , Nuclear material, nuclear fuel and their analytical test method , Grinding material and apparatus , Boiler and its auxiliary equipment , Inorganic chemicals in general , Cereal crop and forage crop in general , Metal chemical property test method , Precious metals and its alloy analysis method , Argillaceous and high alumina fire resistance , Metallurgical auxiliary material ore , Agricultural products and feed processing machinery , Technical Management , Materials , Basic standards and general methods , Semimetal and semiconductor material analysis method .


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

  • GB/T 15033-2009 Green coffee - Olfactory and visual examination and determination of foreign matter and defects
  • GB/T 12004.1-1989 Determination of impurities particles number in polyvinyl chloride paste resins
  • GB/T 29598-2013 Limit and determination of triazines in fluorescent brighteners
  • GB/T 511-2010 Petroleum petroleum products and additives - Method for determination of mechanical admixtures
  • GB/T 11113-1989 Analytical method for impurities in the synthetic quartz crystal
  • GB/T 8038-1987 Toluene of coal carbonization--Determination of hydrocarbon impurities-gas chromatographic method
  • GB/T 8038-2009 Toluene of coal carbonization—Determination of hydrocarbon impurities gas chromatographic method
  • GB/T 31197-2014 Inorganic chemicals for industrial use-Determination of impurity anions - Ion chromatography method
  • GB/T 15033-1994 Green coffee-Olfactory and visual examination and determination of foreign matter and defects
  • GB/T 8086-1987 Raw natural rubber--Determination of dirt
  • GB/T 21992-2008 Polyvinyl chloride resins for Paste - Determination of number of impurities particles and foreign particles
  • GB/T 31886.1-2015 Test method about the influence of gaseous contaminants in reaction gas on the performance of proton exchange membrane fuel cells―Part 1:Gaseous contaminants in air
  • GB/T 14488.2-1993 Method for determination of foreign matter in oilseeds
  • GB/T 513-1977 of mechanical impurities in lubricating greases(acid decomposition method)
  • GB/T 602-2002 Chemical Reagent – Preparations of Standard Solutions for Impurity
  • GB/T 3144-1982 Toluene;Determination of hydrocarbon impurities;Gas chromatographic method
  • GB/T 10470-1989 Determination of mineral impurities in quick frozen fruits and vegetables
  • GB/T 5494-1985 Inspection of grain and oilseeds; Methods for determination of foreign matter and unsound kernels
  • GB/T 41799-2022 Assay method of restriction endonuclease impurity
  • GB/T 24574-2009 Test methods for photoluminescence analysis of single crystal silicon for Ⅲ-Ⅴ impurities
  • GB/T 14488.2-2008 Oilseeds—Determination of content of impurities
  • GB/T 24582-2009 Test method for measuring surface metal contamination of polycrystalline silicon by acid extraction-inductively coupled plasma mass spectrometry
  • GB/T 15688-1995 Animal and vegetable oils and fats-Determination of insoluble impurities content
  • GB/T 15688-2008 Animal and vegetable fats and oils - Determination of insoluble impurities content
  • GB/T 6017-1999 Butadiene for industrial use-Determination of purity and hydrocarbon impurities-Gas chromatographic method
  • GB/T 5529-1985 Inspection of vegetable oils; Methods for determination of foreign matter
  • GB/T 9348-2008 Plastics - Poly(vinyl chloride) resins - Determination of number of impurities and foreign particles
  • GB/T 41712-2022 Assay method of deoxyribonuclease I activity and impurity
  • GB/T 3392-2003 Propylene for industrial use—Determination of hydrocarbon impurities—Gas chromatographic method
  • GB/T 5413.30-1997 Milk and milk powder-Determination of impurities
  • GB/T 511-1988 Petroleum products and additives-Determination of mechanical impurities-Gravimetric method
  • GB/T 5494-2008 Inspection of grain and oils—Determination of foreign matter and unsound kernels of grain and oilseeds
  • GB/T 13372-1992 Determination of trace elements in uranium dioxide powders and pellets by ICP - AES
  • GB/T 4298-1984 The activation analysis method for the determination of elemental impurities in semiconductor silicon materials
  • GB/T 9348-1988 Determination of number of impurities and foreign particles of polyvinyl chloride resins
  • GB/T 22878-2008 Paper and board—Estimation of contraries
  • GB/T 3780.12-2007 Carbon black—Part 12:Inspection of impurity material
  • GB/T 6017-2008 Butadiene for industrial use - Determination of purity and hydrocarbon impurities - Gas chromatographic method
  • GB/T 3780.12-1995 Carbon black-Inspection of impurity material
  • GB/T 8086-2008 Raw natural rubber - Determination of dirt
  • GB/T 12533-1990 Determinaiton of micellaneous matter in edible fungi
  • GB/T 12533-2008 Determination of extraneous matter in edible mushroom
  • GB/T 31886.2-2015 Test method about the influence of gaseous contaminants in reaction gas on the performance of proton exchange membrane fuel cells―Part 2:Gaseous contaminants in hydrogen
  • GB/T 12208-2008 Test methods of components and impurities of the manufactured gas
  • GB 5413.30-2010 National food safety standard Determination of impurities in milk and milk products
  • GB/T 3391-2002 Ethylene for industrial use-Determination of hydrocarbon impurities-Gas chromatographic method
  • GB/T 10470-2008 Quick frozen fruits and vegetables - Determination of mineral impurities content

Professional Standard - Machinery

Professional Standard - Agriculture

Association Standard - China Boiler Water Quality Association Standards

Professional Standard - Chemical Industry

  • HG/T 2797.5-2007 Silica-alumina carbon black-Part 5:Inspection of impurity material
  • HG/T 2797.5-1996 Determination of silicon aluminum carbon black impurities
  • HG/T 3696.2-2002 Inorganic chemical products Preparations of standard solutions for chemical analysis
  • HG/T 3945-2007 Vinyl chlorede monomer-Determination of organic impurities contents

Professional Standard - Commodity Inspection

  • SN/T 0801.1-2012 Determination of animal and vegetable oils and fats for export. Part 1: Insoluble impurities content
  • SN/T 2081-2008 Determination of impurities in alumina—Inductively coupled plasma atomic emission spectrometric method (ICP-AES) with microwave dissolution
  • SN/T 4020-2013 Determination of impurity elements content in pure iron-X-ray fluorescence spectrometry
  • SN/T 0803.6-1999 Oil bearing materials for import and export - Method for the inspection of impurities
  • SN/T 0801.1-1999 Animal and vegetables oils and fats for import and export - Method for the determination of insoluble impurities content
  • SN/T 0800.18-1999 Cereals and feedstuffs for import and export—Method for the inspection of admixture

Professional Standard - Petrochemical Industry

  • SH/T 1773-2012 1 2 4-Trimethylbenzene-Determination of purity and hydrocarbon impurities-Gas chromatographic method
  • SH/T 1489-1998 Petroleum p-xylene—Determination of purity and hydrocarbon impurities—Gas chromatographic method
  • SH/T 0336-1994 SH/T 0336-1994
  • SH/T 1497-2002 Tert-butylalcohol for industrial use -- Determination of purity and impurities -- Gas chromatographic method
  • SH/T 1766.2-2008 Petroleum m-Xylene-Determination of purity and hydrocarbon impurities-Gas chromatographic method
  • SH/T 1745-2004 Cumene (Isopropyl benzene) for industrial use -- Determination of purity and impurities -- Gas chromatographic method
  • SH/T 1627.2-1996 Determination for purity and organic impurity of industrial acetonitrile - Gas chromatography method
  • SH/T 1492-2004 1-Butene for industrial use -- Determination of purity and hydrocarbon impurities -- Gas chromatographic method
  • SH/T 1778-2014 Chemical grade propylene- Deterxnanation of purity andhydrocarbon impurities-Gas chromatographic method
  • SH/T 1492-1992 Determination of industrial 1-butene purity and hydrocarbon impurities by gas chromatography
  • SH/T 1148-2001 Ethylbenzene for industrial use-Determination of purity and hydrocarbon impurities-Gas chromatographic method
  • SH/T 0330-1992 Determination method for mechanical admixture of lubricating grease (extraction method)
  • SH/T 1482-2004 Isobutene for industrial use - Determination of purity and hydrocarbon impurities - Gas chromatographic method
  • SH/T 1489-2018 Petroleum p-xylene Determination of purity and hydrocarbon impurities Gas chromatography
  • SH/T 1674-1999 Cyclohexane for industrial use-Determination of purity and hydrocarbon impurities-Gas chromatographic method

Professional Standard - Non-ferrous Metal

  • YS/T 363-2006 Determination of trace impurities in purity rhodium by atomic emission spectrometric
  • YS/T 361-2006 Determination of trace impurities in purity platinium by atomic emission spectrometric
  • YS/T 364-2006 Determination of trace impurities in purity iridium by atomic emission spectrometric
  • YS/T 362-2006 Determination of trace impurities in purity palladium by atomic emission spectrometric
  • YS/T 365-2006 Determination of trace impurities in high purity platinum by atomic emission sspectrometric

Professional Standard - Ferrous Metallurgy

  • YB/T 1507-1977 Method for Determination of Rare Earth Impurities in Gadolinium Oxide by Emission Spectroscopy
  • YB/T 1504-1977 Method for Determination of Emission Spectra of Rare and Upper Rare Impurities in Neodymium Oxide
  • YB/T 5180-1993 Method of testing of impurity for hard clay and bauxite chamottes
  • YB/T 1505-1977 Method for Determining Emission Spectra of Rare Earth Impurities in Samarium Oxide
  • YB/T 5180-2005 Test method of impurity for flint clay and bauxite clinker
  • YB/T 1503-1977 Method for Determining Emission Spectra of Diluted and Upper Impurities in Lanthanum Oxide

Group Standards of the People's Republic of China

中华全国供销合作总社

  • GH/T 1337-2021 Rapid determination of impurity content of seed cotton. Near infrared spectroscopy

Professional Standard - Automobile

  • QC/T 575-1999 Work guide for automobile cleanness - Analysis method for impurity

Fujian Provincial Standard of the People's Republic of China

  • DB35/T 1177-2011 Determination of Hydrocarbon Impurities in Dissolved Acetylene by Gas Chromatography
  • DB35/T 1248-2012 Determination of impurity content in germane gas for electronics industry - Gas chromatography
  • DB35/T 1625-2016 Determination of impurity content in carbon monoxide by gas chromatography
  • DB35/T 1146-2011 Determination of Impurity Element Content in Silicon Materials by Glow Discharge Mass Spectrometry

Professional Standard - Electron

  • SJ 20635-1997 Test method for residual impurities concentration in microzone of semi-insulating gallium arsenide
  • SJ/T 10552-1994 Method of emission specthochemical analysis of impurities in TiO2 for use in electron ceramics
  • SJ/T 10553-1994 Method of emission spectrochemical analysis of impurities in ZrO2 for use in electron ceramics
  • SJ/T 11494-2015 Test methods for photoluminescence analysis of single crystal silicon for III-V impurities
  • SJ 20744-1999 General rule of infrared absorption spectral analysis for the impurity concentration in semiconductor materials
  • SJ/T 10626-1995 Method for determining impurities in gold wire for semiconductor lead bonding by ICP-AES

Guangxi Provincial Standard of the People's Republic of China

Hebei Provincial Standard of the People's Republic of China

  • DB13/T 5874-2023 Chromatographic method for determination of impurities in hydrogen fluoride used in the electronics industry

检验方法与规程专业(理化)

  • GB 5413.30-2016 National Food Safety Standard Determination of Impurities in Milk and Milk Products

Taiwan Provincial Standard of the People's Republic of China

  • CNS 3237-1971 Method of Test for Impurities in Compressed Hydrogen

Professional Standard - Railway

  • TB/T 2328.17-1992 Test Method for the Content of Railway Ballast Clay and other Impurities

工业和信息化部

  • SH/T 1492-2020 1-Butene for industrial use - Determination of purity and hydrocarbon impurities - Gas chromatographic method
  • SH/T 1482-2020 Isobutene for industrial use - Determination of purity and hydrocarbon impurities - Gas chromatographic method

Professional Standard - Textile

  • FZ/T 10006-1993 Inspection of Nep Impurity Defect Rate of Cotton, Pure Chemical Fibre and Blended Grey Fabrics

国家市场监督管理总局、中国国家标准化管理委员会

  • GB/T 8086-2019 Rubber,raw natural—Determination of dirt content
  • GB/T 6017-2021 Determination of purity and hydrocarbon impurities of butadiene for industrial use—Gas chromatographic method
  • GB/T 41153-2021 Determination of boron,aluminum and nitrogen impurity content in silicon carbide single crystal―Secondary ion mass spectrometry

PL-PKN

CZ-CSN

International Organization for Standardization (ISO)

  • ISO 927:2009 Spices and condiments - Determination of extraneous matter and foreign matter content
  • ISO 1265:1979 Plastics; Polyvinyl chloride resins; Determination of number of impurities and foreign particles
  • ISO 15755:1999 Paper and board - Estimation of contraries
  • ISO 249:1995 Rubber, raw natural - Determination of dirt content
  • ISO 249:2014 Rubber, raw natural - Determination of dirt content
  • ISO 249:2016 Rubber, raw natural - Determination of dirt content
  • ISO 658:1988 Oilseeds; determination of impurities content

SE-SIS

  • SIS SS-ISO 1265:1987 Plastics - Polyvinyl chloride resins - Determination of number of impurities and foreign particles
  • SIS SS 11 11 16-1987 Steel - Method for assessment of the content of non-metallic inclusions - Microscopic methods - Jernkontorets inclusion chart II for the assessment of non-metallic inclusions
  • SIS SS 13 21 20-1991 Aggregate — Organic impurities — Testing

German Institute for Standardization

  • DIN EN ISO 927:2010 Spices and condiments - Determination of extraneous matter and foreign matter content (ISO 927:2009); German version EN ISO 927:2009
  • DIN EN ISO 1265:2007 Plastics - Poly(vinyl chloride) resins - Determination of number of impurities and foreign particles (ISO 1265:2007) English version of DIN EN ISO 1265:2007-05
  • DIN EN ISO 15755:1999 Paper and board - Estimation of contraries (ISO 15755:1999); German version EN ISO 15755:1999
  • DIN EN ISO 658:2002-08 Oilseeds - Determination of content of impurities (ISO 658:2002); German version EN ISO 658:2002

British Standards Institution (BSI)

European Committee for Standardization (CEN)

  • EN ISO 927:2009 Spices and condiments - Determination of extraneous matter and foreign matter content (ISO 927:2009)
  • EN ISO 927:2009/AC:2012 Spices and condiments - Determination of extraneous matter and foreign matter content - Technical Corrigendum 1 (ISO 927:2009/Cor 1:2012)
  • EN ISO 658:1995 Oilseeds - Determination of Impurities Content ISO 658: 1988

VN-TCVN

  • TCVN 4891-2013 Spices and condiments.Determination of extraneous matter and foreign matter content
  • TCVN 5615-1991 Tea.Method for determination of foreign matter
  • TCVN 6089-2004 Rubber, raw natural.Determination of dirt content

Japanese Industrial Standards Committee (JISC)

Spanish Association for Standardization (UNE)

TR-TSE

Association Francaise de Normalisation

BE-NBN

Institute of Interconnecting and Packaging Electronic Circuits (IPC)

Indonesia Standards

PT-IPQ

ET-QSAE

TN-INNORPI

HU-MSZT

AR-IRAM

SCC

  • CAN 2-3.5-M79-1979 Essence, auto, sans plomb
  • BS EN ISO 658:1995 Oilseeds. Determination of impurities content
  • BS 2889:1957 Test for trash content of cotton and for trash and lint content of waste intened for spinning by means of the shirley analyser
  • BS 4289-2:1968 Methods for the analysis of oilseeds. Determination of impurities

GOSTR

  • GOST 9679.2-1971 Raw cotton. Method of determining impurities
  • GOST 27868-2019 High purity substances. Method for concentration of microimpurities by extraction

American Society for Testing and Materials (ASTM)

RU-GOST R

  • GOST 24245-1980 Reagents. Method for the determination of ammonium impurity
  • GOST 26239.4-1984 Dichlorsilane. Methods of inpurities determination
  • GOST ISO 658-2013 Oilseeds. Determination of content of impurities
  • GOST R 56240-2014 Copper. Spectral methods of impurity analysis
  • GOST 19920.7-1974 Stereoregular butadiene synthetic rubbers. Method for determination of presence of mechanical inclusions and insoluble polymer impurities
  • GOST 10671.1-2016 Reagents. Method for determination of silica impurity
  • GOST 10485-1975 Reagents. Methods for determination of arsenic admixture
  • GOST 24245-2016 Reagents. Method for determination of ammonium impurity
  • GOST 10485-2016 Reagents. Methods for determination of arsenic impurity
  • GOST 10671.1-1974 Reagents. Method for determination of silica impurity
  • GOST 27748-1988 Polyolefins. Test procedure for the determination of contaminants
  • GOST 16457-2016 Reagents. Methods for determination of aldehydes impurity
  • GOST 26239.5-1984 Semiconductor silicon and quartz. Method of impurities determination
  • GOST 25559-1982 Liquid petroleum paraffins. Method for determination of impurities content and calculation of n-alkanes content
  • GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
  • GOST 27868-1988 High purity substances. Method for concentration of microimpurities by extraction

RO-ASRO

Korean Agency for Technology and Standards (KATS)

GSO

Universal Oil Products Company (UOP)

YU-JUS