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as concentration

as concentration, Total:167 items.

In the international standard classification, as concentration involves: Geology. Meteorology. Hydrology, Coals, Pulps, Linear and angular measurements, Air quality, Medical sciences and health care facilities in general, Pharmaceutics, Occupational safety. Industrial hygiene, Machine tools, Food products in general, Wastes, Radiation measurements, Protection against fire, Non-destructive testing, Products of the chemical industry, Paint ingredients, Alarm and warning systems, Fuels, Raw materials for rubber and plastics, Accident and disaster control, Construction materials, Testing of metals, Protection against dangerous goods, Laboratory medicine, Nuclear energy engineering, Particle size analysis. Sieving, Rubber, Optoelectronics. Laser equipment, Water quality, Installations in buildings, Radiation protection, Semiconducting materials, Tobacco, tobacco products and related equipment, Inorganic chemicals, Farming and forestry, Insulating fluids, Environmental protection, Analytical chemistry, Vocabularies, Aerospace fluid systems and components, Surface treatment and coating, Test conditions and procedures in general, Agricultural machines, implements and equipment, Furniture, Products of the textile industry.

National Metrological Technical Specifications of the People's Republic of China, as concentration

• JJF 1074-2001 Measurement Tables for Density - Concentration of Alcohol
• JJF 1716-2018 Program of Pattern Evaluation of Dust Concentration Measuring Instruments
• JJF 1348-2012 Program of Pattern Evaluation of Analyzers for Oil Content in Water

Liaoning Provincial Standard of the People's Republic of China, as concentration

• DB21/T 3595-2022 Level of Ground Ozone Concentration
• DB21/T 3270-2020 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Professional Standard - Urban Construction, as concentration

• CJ/T 524-2018 Odorant Concentration Monitor
• CJ/T 3028.2-1994 The measures of ozone concentration, output and specific energy consumption for ozone generator

國家煤礦安全監(jiān)察局, as concentration

• MT 79-1984 Methods for determination of dust concentration and dispersion
• MT/T 163-2019 General technical conditions for direct-reading dust concentration measuring instruments

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, as concentration

• GB 8240-1987 Marine oil content meter
• GB/T 5399-2004 Pulps-Determination of stock concentration
• GB/T 6921-1986 Determination of the concentration of airborne particulate matters
• GB/T 16146-1995 Standards for controlling radon concentration in dwellings
• GB/T 16147-1995 Scintillation flask method for measuring radon concentration in the air
• GB 14882-1994 Limited concentrations of radioactive materials in foods
• GB/T 11276-2007 Determination of Critical Micelle Concentration of Surfactant
• GB/T 16425-1996 Dctermination for minimum explosive concentration of dust cloud
• GB/T 23574-2009 Metal cutting machines tools.Determination methods of oil mist concentration
• GB/T 18856.2-2008 Test methods for coal water mixture.Part 2:Determination of mass percentage of solid
• GB/T 8301-2001 Natural rubber latex concentrate--Determination of mechanical stability
• GB/T 23573-2009 Metal cutting machine tools.Determining method of dust concentration
• GB 27742-2011 Activity concentration for material not requiring radiological regulation
• GB/T 8300-2001 Natural rubber latex concentrate--Determination of alkalinity
• GB/T 27824-2011 Chemicals. Test method of acute inhalation toxicity. Fixed concentration procedure
• GB/T 27752-2011 Validation of the strength of uranium reference solution, plutonium reference solution and potassium dichromate reference solution
• GB/T 8300-2008 Natural rubber latex concenttrate. Determination of alkalinity
• GB/T 8301-2008 Natural rubber latex concenttrate. Determination of mechanical stability
• GB 4914-2008 Effluent limitations for pollutants from offshore petroleum exploration and production
• GB/T 1652-2014 Naphthol AS
• GB/T 8757-2006 Determination of carrier concentration in gallium arsenide by the plasma resonance minimum
• GB/T 6167.2-1985 Methods for testing the performance of dust particle counter--Particle concentration
• GB/T 14146-2009 Silicon epitaxial layers-determination of carrier concentration-mercury probe voltages-capacitance method
• GB/T 11848.16-1991 Determination of phosphorus in uranium ore concentrate by spectrophotometry
• GB/T 11068-1989 Gallium arsenide epitaxial layer--Determination of carrier concentration--Voltage-capacitance method
• GB/T 14146-1993 Silicon epitaxial layers--Determination of carrier concentration--Mercury probe Valtage-capacitance method
• GB/T 11068-2006 Gallium arsenide epitaxial layer.Determination of carrier concentration voltage-capacitance method
• GB/T 13389-1992 Practice for conversion between resistivity and dopant density for boron-doped and phosphorus-doped silicon
• GB/T 19199-2003 Test method for carbon concentration of semi-insulating monocrystal gallium arsenide by measurement infrared absorption method
• GB/T 36705-2018 Test method for carrier concentration of gallium nitride substrates—Raman spectrum method
• GB/T 24714-2009 Oxygen concentrator
• GB/T 17170-2015 Test method for the EL2 deep donor concentration in semi-insulating gallium arsenide single crystals by infrared absorption spectroscopy
• GB/T 19199-2015 Test methods for carbon acceptor concentration in semi-insulating gallium arsenide single crystals by infrared absorption spectroscopy
• GB/T 13389-2014 Practice for conversion between resistivity and dopant density for boron-doped, phosphorus-doped, and arsenic-doped silicon
• GB/T 18856.2-2002 Test methods for quality of coal water mixture--Part 2: Determination of the solid load of coal water mixture
• GB/T 31705-2015 In situ measurement of background atmospheric carbon dioxide and methane concentration by gas chromatographic (GC) system
• GB/T 17170-1997 Test method for deep level EL2 concentration of undoped semi-insulating monocrystal gallium arsenide by measurement infrared absorption method

Professional Standard-Ships, as concentration

• CB/T 1033-1999 Marine oil content meter

Professional Standard - Traffic, as concentration

• JT/T 2014-1990 Method for Determination of Port Dust Concentration
• JT 464-2001 Control mark and measuring methods of density of ore dust for harbor

Professional Standard - Electricity, as concentration

• DL/T 1002-2022 Calibration method of low concentration dissolved oxygen meter

工業(yè)和信息化部, as concentration

• JB/T 20201-2021 Vaporized hydrogen peroxide concentration detector

Inner Mongolia Provincial Standard of the People's Republic of China, as concentration

• DB15/T 3129-2023 Method for forecasting airborne pollen concentration levels
• DB15/T 2362-2021 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Hubei Provincial Standard of the People's Republic of China, as concentration

• DB42/T 1198-2016 Concentration levels of air negative oxygen ions in Hubei Province
• DB42/T 1914-2022 Technical specifications for monitoring the concentration of negative oxygen ions in forest environment
• DB42/T 1904-2022 Portable β-ray method for the determination of low-concentration particulate matter in exhaust gas from stationary pollution sources

Professional Standard-Safe Production, as concentration

• AQ/T 6206-2006 High and low concentration methane sensor for coal mine
• AQ 6206-2006 Coal mine high-low concentration methane transducer
• AQ/T 6204-2006 Thermal Conductivity High Concentration Methane Sensor for Gas Drainage
• AQ 6203-2006 Coal mine low-concentration carrier catalytic methane transducer
• AQ 4203-2008 Administrative standards for personal exposure concentration of respirable rock dust in the air of workplace
• AQ 6204-2006 Thermal-conduction high concentration methane transducer for gas drainage
• AQ 4202-2008 Administrative standard for personal exposure concentration of respirable coal dust in the air of workplace

National Metrological Verification Regulations of the People's Republic of China, as concentration

• JJG 950-2012 Verification Regulation of Analyzers for Oil Content in Water
• JJG 1089-2013 Osmometers
• JJG 950-2000 Verification Regulation of Oil Content in Water Analyzers
• JJG(煤炭) 08-1996 Verification Regulation of Direct Reading Mine Dust Concentration Measuring Instrument

中華人民共和國國家衛(wèi)生和計劃生育委員會, as concentration

• WS/T 222-2002 Guideline for the measurement of catalytic concentration of clinical enzymes
• GBZ/T 155-2002 Scintillation flask method for measuring radon concentration in the air
• WS/T 349-2011 Reference method for determination of α-amylase catalytic activity concentration

未注明發(fā)布機構(gòu), as concentration

• GJB 11B-2012 Allowable concentration of air components in nuclear submarine cabin
• GJB 7497-2012 Allowable concentration of air components in cabins of surface ships

Professional Standard - Nuclear Industry, as concentration

• EJ/T 20193-2018 Determination of 137Cs Activity Concentration in Radioactive Metal Waste by Gamma Spectroscopy
• EJ/T 20188-2018 Beta Counting Method for Determination of Total Beta Activity Concentration of Low-Level Organic Waste Liquid
• EJ/T 20047-2014 Activity concentration monitoring for alpha radioactive aerosol in the workplace.The decay method
• EJ/T 20195-2018 Determination of Total β Activity Concentration of Radioactive Metal Wastes? β Counting Method
• EJ/T 20187-2018 Thick Source α Counting Method for Determination of Total α Activity Concentration of Low-level Organic Waste Liquid
• EJ/T 670-1992 Control of Hydrogen Concentration in Containment Vessel after Loss of Water Accident
• EJ/T 20191-2018 Determination of Plutonium α Activity Concentration in Radioactive Metal Waste TiOA Extraction-Liquid Scintillation Method
• EJ/T 20194-2018 Thick Source α Counting Method for Determination of Total α Activity Concentration of Radioactive Metal Waste
• EJ/T 20190-2018 Gas Chromatography Method for Determination of TBP and DBP Concentration in Low-level Organic Waste Liquid
• EJ/T 20192-2018 Determination of 90Sr Activity Concentration in Radioactive Metal Waste by HDEHP Extraction Chromatography-β Counting Method
• EJ/T 20057-2014 Determination of uranium concentration in atmospheric fallout.Liquid fluorometry by ultraviolet
• EJ/T 746-1992 Infrared Absorption Method for Heavy Water Concentration Analysis in Primary Circuit of Heavy Water Research Reactor
• EJ/T 1075-1998 Determination of gross alpha activity in water thick source method
• EJ/T 20089-2014 Determination of Pu α activity in intermediate level radioactive liquid waste and its sludge.TiOA extraction α counting method

Professional Standard - Machinery, as concentration

• JB/T 9878-1999 Determination of dust concentration of metal cutting machine tools
• JB/T 9879-1999 Measuring method of oil mist concentration for metal cutting machine tools
• JB/T 3145-1982 Method of test for highly concentrated sulfureted hydrogen in silver electroplating layer and evaluation of test results

Professional Standard - Hygiene , as concentration

• WS/T 419-2013 The values of enzymatic activity concentrations assigned for the reference materials
• WS/T 351-2011 Reference procedure for the measurement of catalytical activity concentration of alkaline phosphatase(ALP)
• WS/T 417-2013 Reference procedure for the measurement of catalytic concentration of γ-Glutamyltransferase

Shanxi Provincial Standard of the People's Republic of China, as concentration

• DB14/T 1710-2018 Greenhouse Gas Carbon Dioxide Concentration Assessment Specification

Hebei Provincial Standard of the People's Republic of China, as concentration

• DB13/T 2589-2017 Infrared Spectrophotometric Method for Determination of Industrial Fume Concentration
• DB13/T 2375-2016 Gravimetric method for determination of low-concentration particulate matter in exhaust gas from stationary pollution sources

Professional Standard - Chemical Industry, as concentration

• HG/T 2668-1995 Naphthalene AS-D
• HG/T 3959-2007 Naphthol AS-PH
• HG/T 2668-2006 Naphthalene AS-D
• HG/T 2747-1996 Naphthalene AS-OL

Group Standards of the People's Republic of China, as concentration

• T/GIEHA 012-2019 Indoor environmental ecological negative (oxygen) ion concentration level
• T/CSTM 00209-2020 Non-destructive testing-The electromagnetic method for measuring magnetic particle suspension concentration
• T/NAIA 092-2021 Determination of Formaldehyde Concentration in Indoor Air by Microplate Method
• T/WJZZ 009-2021 Whole measurement calibration method of particle number concentration measuring instrument
• T/SSM 5-2022 Calibration specifications for particle number concentration measuring instruments used in motor vehicle emissions
• T/NAIA 004-2020 Determination of Ammonia Nitrogen Concentration in Rumen Fluid Alkaline Sodium Hypochlorite-Phenol Spectrophotometry
• T/LCAA 005-2021 Determination of methane, nitrous oxide and carbon dioxide concentrations in gases——gas chromatography method
• T/BSRS 028-2020 Technical specification for analysis of gamma gross activity concentration in liquid effluents for nuclear power plants
• T/BSPT 003-2018 Performance test method for fine particulate matter （PM2.5 ）mass concentration measurement instruments based on light scattering principle
• T/EERT 012.1-2021 Technical guideline for synergistic treatment of volatile organic waste gas Part 1：General rule
• T/ZZB 1055-2019 High concentration tetramethyl ammonium hydroxide for flat panel displays production

Fujian Provincial Standard of the People's Republic of China, as concentration

• DB35/T 74-1996 Methods for determination of blood concentrations of antiepileptic drugs

GSO, as concentration

• OS GSO 1898:2009 Flowable concentration - water suspension concentration

Taiwan Provincial Standard of the People's Republic of China, as concentration

• CNS 8457-1982 Oxygen Indicator and Oxygen Alum
• CNS 8458-1982 Method of Test for Oxygen Indicator and Oxygen Alarm

Canadian General Standards Board （CGSB), as concentration

• CGSB 1.500-75 METH 7-CAN2-1973 Methods of Test for Toxic Trace Elements in Protective Coatings Determination of Leachable Arsenic (As) in Low Concentration

Professional Standard - Building Materials, as concentration

• JC/T 2110-2012 Indoor air ion concentration test method

國家市場監(jiān)督管理總局、中國國家標準化管理委員會, as concentration

• GB/T 14146-2021 Test method for carrier concentration of silicon epitaxial layers—Capacitance-voltage method
• GB/T 39193-2020 Ambient air—Determination of particulate matter mass concentration—Gravimetric method
• GB/T 41456-2022 Nanotechnologies—Determination of the concentration of nanometer titanium dioxide airborne dust in workplace—Spectrophotometry method
• GB/T 25915.1-2021 Cleanrooms and associated controlled environments—Part 1: Classification of air cleanliness by particle concentration
• GB/T 25915.10-2021 Cleanrooms and associated controlled environments—Part 10: Classification of surface cleanliness by chemical concentration
• GB/T 25915.8-2021 Cleanrooms and associated controlled environments—Part 8: Classification of air cleanliness by chemical concentration (ACC)
• GB/T 39544-2020 Natural rubber latex concentrate—Determination of total phosphate content—Spectrophotometric method
• GB/T 40345-2021 Crop protection equipment—Test method for the determination of drainable volume and its concentration
• GB/T 38723-2020 Determination of emission rate of volatile organic compounds from wooden furniture—Concentration history method

Professional Standard - Electron, as concentration

• SJ 20519-1995 Determination of Nd concentration of Nd:YAG laser rods
• SJ 20635-1997 Test method for residual impurities concentration in microzone of semi-insulating gallium arsenide
• SJ/T 11493-2015 Test method for measuring nitrogen concentration in silicon substrates by secondary ion mass spectrometry
• SJ 2757-1987 Method of measurement by infra-red reflection for charge carrier concentraiton of heavily doped semiconductors
• SJ 3249.3-1989 Methods of measurement for chromium concentration in semi-insulation Gallium arsenide by infra-red absorption
• SJ 3249.2-1989 Methods of measurement for Carbon concentration of semi-insulation Gallicem arsenide single crystal by infra-red absorption
• SJ/T 10925-1996 Methods for calculation of concentration and modulus of potassium silicate solution for use in electronic industry
• SJ 3248-1989 Methods for measuring carrier concentration of readded Gallium arsenide and Indium phosphide by infra-red reflection
• SJ/T 11498-2015 Test method for measuring oxygen contamination in heavily doped silicon substrates by secondary ion mass spectrometry

國家能源局, as concentration

• NB/T 10362-2019 Design specifications for low-concentration gas oxidation and utilization projects in coal mines

Military Standard of the People's Republic of China-General Armament Department, as concentration

• GJB 6369-2008 Operating requirement of high concentration hydrogen peroxide

International Organization for Standardization (ISO), as concentration

• ISO 10980:1995 Validation of the strength of reference solutions used for measuring concentrations

Professional Standard - Tobacco, as concentration

• YC/T 342-2010 Determination of phosphine concentration for tobacco pest fumigation-Wireless sensor method

Professional Standard - Railway, as concentration

• TB/T 1912-1987 Allowable Concentration of Diesel Locomotive Exhaust Gas in the Air of Railway Operation Tunnels
• TB/T 1912-2005 Allowable Concentration and Measurement of Locomotive Exhaust in Railway Operating Tunnel

Korean Agency for Technology and Standards (KATS), as concentration

• KS A ISO 10980:2012 Validation of the strength of reference solutions used for measuring concentrations

Professional Standard - Coal, as concentration

• MT 445-1995 Technical conditions of high concentration thermal conductivity methane sensor for coal mine

US-FCR, as concentration

• FCR FED H-08-4 VOL 2 235-1984 CONC. WHEEL STOPS
• FCR FED H-08-4 VOL 2 240-1984 CONC. PEDESTRIAN PAVEMENT

Jiangxi Provincial Standard of the People's Republic of China, as concentration

• DB36/T 1386-2021 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

National Health Commission of the People's Republic of China, as concentration

• WST 349:2011 Reference method for determination of α-amylase catalytic activity concentration
• WST 361:2011 Reference method for determination of catalytic activity concentration of lactate dehydrogenase

Jilin Provincial Standard of the People's Republic of China, as concentration

• DB22/T 3426-2023 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Professional Standard - Labor and Labor Safety, as concentration

• LD 41-1992 Management standards for exposure concentration of respirable rock dust in the air of workplaces
• LD 39-1992 Management standards for exposure concentration of respirable coal dust in air in workplaces

Qinghai Provincial Standard of the People's Republic of China, as concentration

• DB63/T 1873-2020 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Occupational Health Standard of the People's Republic of China, as concentration

• GBZ/T 192.1-2007 Determination of dust in the air of workplace.Part l：Total dust concentration
• GBZ/T 192.2-2007 Determination of dust in the air of workplace. Part 2：Respirable dust concentration

SCC, as concentration

• BS 3715:1964 Specification for concentration gradient density columns

衛(wèi)生健康委員會, as concentration

• WS/T 617-2018 Aspartate aminotransferase catalytic activity concentration reference measurement procedure

Professional Standard - Meteorology, as concentration

• QX/T 67-2007 Determination of concentration of carbon dioxide in flask samples from background atmosphere.non-dispersive infrared absorption method

Professional Standard - Agriculture, as concentration

• GB 5009.225-2023 National Food Safety Standard Determination of Ethanol Concentration in Wine and Edible Alcohol

HU-MSZT, as concentration

• MSZ 3702-1981 Milk concentration detection

Zhejiang Provincial Standard of the People's Republic of China, as concentration

• DB33/T 2167-2018 Technical specification for low-concentration emission monitoring of waste gas from stationary pollution sources in coal-fired power plants

Standard Association of Australia （SAA）, as concentration

• AS 4215.1:1995 Methods of test for determining fire extinguishing and inerting concentrations for flammable liquids and gases - Determination of fire extinguishing concentrations
• AS 4215.2:1995 Methods of test for determining fire extinguishing and inerting concentrations for flammable liquids and gases - Determination of fire inerting concentrations

UNKNOWN, as concentration

• YB 5002-87 Highly concentrated pine alcohol oil

Professional Standard - Ferrous Metallurgy, as concentration

• YB 5002-1987 High Concentration Pinitol Oil

Japanese Industrial Standards Committee (JISC), as concentration

• JIS L 0808:1994 Standard depths of colour

CH-SNV, as concentration

• VSM 37501-1961 grease. Concentration, penetration1)
• VSM 33936-1974 test. Concentration limits

TN-INNORPI, as concentration

• NT 14.29-1983 Determine milk concentration

Others:   Concentration, Concentration, volume concentration, concentration potential, Fluorescence concentration, Moisture concentration, Atomic Concentration, high concentration, no concentration, no concentration, No. Concentration No. Concentration No. Concentration No., No. Concentration No. Concentration No. Concentration No. Concentration, free concentration and total concentration, as concentration, Dilution Concentration and Final Concentration, Concentration Concentration Experiment, high concentration concentration, acid concentration concentration, Concentration of particulate matter concentration, Apparent concentration and peak concentration.