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Database: 365,228(8 Aug 2026)
industrial ethylene glycol diethylene glycol triethylene glycol triethylene glycol content glycol dispersible silica application comparison method supply status limited grade range
GB/T 14571.2-1993 in English

GB/T 14571.2-1993 in English

SUPERSEDED

glycol for industrial use. Determination of diethylene glycol and triethylene glycol. Gas chromatographic method

  • Issued on:1993-07-21
  • Implemented on:1994-07-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $70.00
$68.00
Standard No: GB/T 14571.2-1993
Document status: SUPERSEDED
Superseded by: GB/T 14571.2-2018 Test method of ethylene glycol for industrial use—Part 2:Determination of purity and impurities—Gas chromatography
Superseded on: 2018-10-01
Title in English: glycol for industrial use. Determination of diethylene glycol and triethylene glycol. Gas chromatographic method
Title in Chinese: 工业用乙二醇中二乙二醇和三乙二醇含量的测定 气相色谱法
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 1~3 business days
Issued on: 1993-07-21
Implemented on: 1994-07-01
ICS Classification: 71.080.60-Alcohols. Ethers
Chinese Classification: G16-Basic organic chemicals
Professional Classification: GB-National Standard
Related Keywords: industrial ethylene glycol
diethylene glycol
triethylene glycol
triethylene glycol content
glycol
Related Topics: alcohol
Ethylene glycol
diol
Second-hand gas phase test method
Parameters of the second-hand gas phase
Methanol ethanol gas phase
Methanol ethanol peak
Methanol ethanol peak
chromatography methanol ethanol
Second
Ethylene glycol gas phase content
Analytical method for polyethylene glycol,
Polyethylene glycol quality
Polyethylene glycol quality
polyethylene glycol material
polyethylene glycol 200
Glycol base
Polyethylene glycol flame retardant
Glycolic acid content
polyethylene glycol fluorene
Determination of Diene Value by Gas Chromatography
ethanol ethanol absolute ethanol
Glycol base
polyethylene glycol flame retardant
Glycolic acid content
Chromatographic ethanol purity
Dipropylene Glycol Gas Chromatography
Dipropylene Glycol Gas Chromatography
Methanol ethanol peak
Ethanol Purity Chromatography
Ethanol Purity Chromatography
ethanol glycerol
polyethylene glycol
Methanol peak Ethanol peak
Liquid analysis of ethanol
Methanol Ethanol Gas Chromatography
Trace ethanol detection in water
Methanol peak Ethanol peak
Gas phase methanol ethanol
Methanol peak + ethanol peak
ethanol tellurium
Stable second-hand gas phase
Comprehensive second-hand gas phase
Domestic professional second-hand gas phase
Ethanol Mass Spectrometry
Advanced used gas phase
Efficient and professional second-hand gas phase
The molecular weight of the second
Colored impurities in ethanol
Liquid Chromatography Propylene Glycol
ethanol
Professional second-hand gas phase
The most professional second-hand gas phase
Chromatographic ethanol solvent
water ethanol
Polyethylene glycol detection
Ethylene glycol gas phase
Gas Chromatography Ethylene Glycol
Ethylene glycol detection method
Polyethylene glycol analysis method
How to use polyethylene glycol
gpc polyethylene glycol
Determination of Ethylene Glycol by Liquid Chromatography
Ethylene glycol detection
ethanol molecular weight
Ethanol spin dry
Three-phase two hundred and two dia
Liquid ethanol
Alcohol detection by gas chromatography
Polyethylene glycol used several times a day
Polyethylene glycol mass spectrometry
gpc determination of polyethylene glycol
ethanol molecular weight
Gas Chromatography Methanol Ethanol Peak
polyethylene glycol
ethanol tellurium
Determination of Chlorine Content in Ethylene Glycol by Ion Chromatography
Ethylene glycol gas phase analysis
The use characteristics of the second-hand gas phase
Glycol boiling range
ptfe ethanol
ethanol wavelength
gpc+polyethylene glycol
Methanol ethanol chromatography
Methanol Ethanol Gas Chromatography
Plastic Polyethylene Glycol
Dipropylene glycol chromatographic peak
Gas Chromatography Methanol Ethanol
Ethanol Mass Spectrometry
polyethylene glycol carbon
Industrial glycol test methods part 1
Gas Chromatography Ethanol Content
Ethanol content test method
Nickel glycolate
Ethylene glycol detection method
ethanol gas chromatography in blood
Gas Chromatography Determination Gas Chromatography Determination of Ethanol
Determination method of ethanol in water
Gas Chromatography Ethanol and Propylene Glycol
food grade ethylene glycol
Alcohol detection method
Ethylene Glycol Gas Chromatography
Polyethylene glycol + mass spectrometry
Ethylene Glycol and Diethylene Glycol Migration
Ethanol Meter
Ethylene glycol content
Ethyl acetate content in ethanol
Ethanol sample method
Gas phase determination of ethanol content
Propylene Glycol Vapor Phase Peak
ethanol spin water
Ethylene glycol content
Ethylene glycol detection method
Ethylene Glycol Regulation
Ethylene Glycol Gas Chromatography
polyethylene glycol plastic
Glycol boiling range
Ethanol content in vapor phase
Ethanol gas phase content
Ethanol content in vapor phase
methanol to ethylene glycol
Industrial glycol
One cubic meter of ethylene glycol
Content Analysis of Ethylene Glycol
Polyethylene glycol detection
Alcohol detection method
Use of polyethylene glycol
Ethanol content in ethyl acetate
Ethylene glycol for motor oil
Diethanolamine Mass Spectrometry
Solvents for the determination of circular dichroism
Ethylene Glycol Liquid Chromatography
ethanol and ptfe
Method for Measuring Ethanol Content 2
industrial chromatography
Liquid phase peak of ethanol
How to measure ethanol in the system
Methanol + Ethylene Glycol
Vapor Phase Purity Ethanol
Detection of ethanol in water
Ethanol Solvent Chromatography
Detection of polyethylene glycol
Vapor phase ethanol peak
Gas phase test for ethylenediamine
Chlorohydrin method
Ethanol gas phase content
Where is the second-hand gas phase?
20% ethanol
Alcohol monitoring in water
Alcohol detection in water
Polyethylene glycol UV
standard ethanol content
Ethylene glycol food grade
mass spectrum alcohol, chromatographic alcohol
Gas Chromatography Methanol Ethanol
Ethylene glycol food grade
polyethylene glycol solution
Triethanolamine liquid chromatography
Main content of ethylene glycol
Ethylene Glycol Gas Chromatography Method
Ethylene Glycol Gas Chromatography Peak
Determination method of ethylene glycol content
Chromatographic analysis of ethylene glycol
Ethylene Glycol Methanol Ethylene Glycol
True 2D Gas Chromatography
Gas Chromatography Ethylene Glycol
Diethanolamine liquid phase
Ethanol normal phase
Polyethylene glycol rapid test
MEG
metallographic second phase
pvdf and ethanol
ethanol liquid phase peak
Vapor Phase Ethanol Methanol
Vapor phase glycol
Polyethylene glycol fixation
Glycol quality
metallographic second phase
vapor phase ethanol
ethanol pvdf
Ethylene Glycol Headspace
pvdf ethanol
Dipropylene Glycol Chromatography
column ethanol
Diethylene glycol content test method
Determination of Ethylene Glycol Content by Gas Chromatography
Detection of ethylene glycol
Polyethylene glycol function
polyethylene glycol
2D peak
Is ethylene glycol poisonous?
Chromatographic analysis of ethylene glycol
cellulose glycol
pvdf ethanol
How to detect ethylene glycol
methanol to ethylene glycol
Gas Chromatography Ethanol Purity
Polyethylene glycol chromatography
ethanol semi-dry
How to make ethylene glycol from methanol
2D peak
Diethylbenzene content
Ethylene glycol use
Ethylene glycol analysis
ethanol market
Diphenylhydrazine ethanol
methanol to ethylene glycol
water ethanol
How to make ethylene glycol from methanol
Literature ethanol
Dialuminum ethoxide
Ethylene glycol introduction
Ethylene Glycol for Chromatography
Ethylene Glycol Gas Chromatography Method
dichroic spectrum
Polyethylene glycol gas chromatography
Chromatographic analysis of ethylene glycol
Ethylene glycol test
diethylene glycol
Ethylene Glycol in Glycerin
Gas phase analysis of ethylene glycol
Ethylene glycol content fast
pvdf with ethanol
methanol and ethylene glycol
Gas Chromatography Ethanol Purity
Ethylene Glycol Determination Method
Glycol quality
Ethylene glycol detection
How Methanol Makes Ethylene Glycol
Determination of Ethylene Glycol Content by Gas Phase Method
Ethylene glycol to ethanol
Ethylene glycol detection method
Ethylene glycol wax
Ethylene glycol content of gas phase method
first-class ethanol
Ethylene glycol to methanol
glycol point
Determination method of ethylene glycol content
Ethylene glycol wax
Gas Chromatography Acetic Acid Content
Ethylene glycol use
methanol peak ethanol
Industrial glycol
ethanol column
Zirconium ethoxide
ethanol in mass spectrometry
Ethylene glycol + gas chromatography
Determination of trace ethanol content in a sample
Gas Chromatography Alcohols
two gas phase
Typical Chromatography
Shibei Industrial Polyethylene Glycol
Ethylene glycol and methanol
Ethylene Glycol Content Test Method
Zirconium ethoxide
Ethanol and Propylene Glycol Vapor Phase
Lithium and ethylene glycol
Tertiary Alcohol Mass Spectrometry
Ethylene glycol technology
Alcohol Chromatography Alcohol
Detection of ethylene glycol
Gas phase solvent ethanol
Uses of Ethylene Glycol
Determination of Ethylene Glycol by Headspace Gas Chromatography
Vapor Phase Dipropylene Glycol
Alcohol detection method
Vapor phase ethanol peak
ethanol round head peak
How about polyethylene glycol
vapor phase ethanol
Ethylene Glycol Liquid Chromatography
Determination of Polyethylene Glycol by Gas Chromatography
Preparation of ethanol
Mass Spec + Ethanol
Determination of ethanol content by gas chromatography
Ethylene glycol test
Ethanol solvent peak in gas chromatography
Ethylene glycol content in engine oil
Ethylene Glycol Liquid Chromatography
Glycolic acid content
Gas Chromatography Ethanol Solvent Peak
Determination of Ethylene Glycol Content by Gas Chromatography
Ethanol Standard Mass Spectrum
ethanol market
Gas Chromatography Ethylene Glycol
Ethylene glycol, diethylene glycol, triethylene glycol gas phase
Gas Chromatography Polyethylene Glycol
Mass Spectrum of Ethanol
Triclosan
Vapor phase ethanethiol
Propylene Glycol Vapor Phase Peak
Two-phase gas welding machine
Ethylene glycol monobutyl ether gas chromatography
Vapor-phase alcohol alkenes
Ethylene glycol gas phase inspection
monoethylene glycol
Tantalum Ethanol
Gas phase + ethanol peak
Peak behind vapor phase ethanol
second hand gas phase hand gas phase
Alcohols in mass spectrometry
food grade ethylene glycol
Ethylene glycol and triethylene glycol in diethylene glycol for industrial use
Electrophoresis ethanol
Gas Chromatography of Ethanol in Methanol
Column Chromatographic Peak
Liquid phase + ethanol
Copper content in ethanol
Methanol Ethanol Gas Chromatography
Methanol ethanol content in water gas phase
ethanol operation
Dihydrodiol
Ethanol + benzene + gas chromatography
ethanol propanol chromatography
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Glycol micelles
Ethanol content in methanol by gas chromatography
Ethylene glycol content in water
Polyethylene glycol content analysis
Determination of ethylene glycol content
Determination of ethylene glycol content
Ethylene Glycol High Performance Liquid Chromatography
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ethanol
Ethylene glycol 35
polyethylene glycol gpc
Ethylene glycol din
Ethylene glycol for industrial use
Determination of Trace Ethylene Glycol by Gas Chromatography
How to Test Ethylene Glycol
Industry Phase II Ethylene Glycol
Liquid Chromatography Ethylene Glycol
Determination of Benzene and Ethanol by Gas Chromatography
Chromatographic alcohol
Polyethylene glycol 100,000
Industrial Gas Chromatography Applications
Impurities in Diethylene Glycol
Level 2 Zn content in water
Gas Chromatography + Methanol + Ethanol
Isoethylene glycol
Method for Determination of Polyethylene Glycol Content
Gas phase determination method of ethanol
Gas phase determination method of ethanol
ethanol gas
Tin glycolate
Ethanol experiment
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Method for Determination of Polyethylene Glycol Content
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Ethanol Chromatographic Peak
Ethanol UV liquid phase
Ethylene glycol spectrum
Ethylene glycol test
Mercaptan gas chromatography detection
Trace ethanol detection in water
Trace ethanol detection
experimental ethanol
ethanol chromatographic alcohol
Determination method of peroxyethanol
GC peaks of ethanol
Mass spectrum peaks of ethanol
Ethanol gas chromatography peak
Ethanol and n-propanol gas chromatographic peaks
ethanol processing
mellow
Ethylene Glycol Quality Grade
Gas chromatography ethanol solvent
ethanol time
Ethylene glycol
Gas Chromatography Ethylene Glycol
flow tube ethanol
Inorganic chlorine in ethanol
vapor phase ethanol method
Determination method of methanol ethanol in water
Mass Spectrum Peaks of Polyethylene Glycol
water ethanol peak
ethanol peak
Determination of Ethylene Content by Gas Chromatography
Ethanol normal phase column
Diethylene glycol gas chromatography
Ethanol absorption spectrum
Industrial Chromatography + Applications
Ethylene glycol determination
Stationary Phase Polyethylene Glycol
Polyethylene glycol electricity
Determination of Methanol Content in Ethanol by Gas Chromatography
Gas Chromatography Ethanol Content
Ethanol Methanol Gas Chromatography
ethanol chromatographic peak time
Determination of Triethylamine by Gas Chromatography
Ethylene glycol new
One ton of ethanol
Gas Chromatography Propylene Glycol Content
Ethanol acetic anhydride
Chlorohydrin and Dichloroethanol
Polyethylene glycol detection method
Liquid Chromatography Ethanol Peak
ethanol icp
Polyethylene Glycol Moisture Content
Chromatographic ethanol impurities
Molecular ethanol
Methanol How Ethylene Glycol
Liquid Chromatography Ethylene Glycol
Determination method of polyethylene glycol
ethanol peak in gas phase
ethanol peak height
Ethanol vapor phase solvent
Does ethanol contain methanol?
Triethylamine Determination Gas Chromatography
Polyethylene glycol stationary phase
How to measure trace ethanol in water
Method for Measuring Ethanol
Test water for ethylene glycol
Polyethylene glycol analysis
Gas Chromatography Ethanol Peak
Vapor phase ethanol peak time
long-term ethylene glycol
dichroic
Polyethylene glycol analysis
trace ethyl acetate in ethanol
Propylene Glycol and Ethanol
Ethylene glycol headspace gas chromatography
Determination of Ethylene Glycol by Headspace Gas Chromatography
Generic Polyethylene Glycol
Generic Polyethylene Glycol
quality of diethylene glycol
Triethanolammonium
Propylene Glycol and Polyethylene Glycol
Check ethylene glycol
Polyethylene Glycol Propylene Glycol
Propylene Glycol and Ethylene Glycol
Secondary content
Molecular mass of ethanol
Ethylene Glycol HPLC
Diethylene glycols
ethanol gas in air
Propylene Glycol and Ethylene Glycol
Polyethylene Glycol + Propylene Glycol
air ethanol gas
Content Analysis of Propylene Glycol
Gas Chromatography Method Ethanol
diol most
Ethylenediamine mobile phase
Dipropylene Glycol and Ethylene Glycol
hot ethanol
Is ethylene glycol the same as monoethylene glycol?
diethylene glycol dipropylene glycol
Glycol canned
Propylene Glycol Polyethylene Glycol
Ethylene Glycol and Propylene Glycol
Polyethylene Glycol Propylene Glycol
To test the content of ethylene glycol
Ethylene Glycol and Dipropylene Glycol
ethanol content
Glycol canned
Detection method of polyethylene glycol
polyethylene glycol and propylene glycol
Ethylene Glycol, Propylene Glycol and Diethylene Glycol
Polyethylene Glycol and Propylene Glycol
Ethylene glycol monohydrate
Ethanol gravimetric method
Ethanol plant
Ethylene glycol content gas phase
Semi-dry ethanol
Polyethylene Glycol-Propylene Glycol
Determination of Mixed Alcohols by Gas Chromatography
ethanol
High-quality first-class glycol
content of dipropylene glycol
Ethanol water kettle
Determination method of propylene glycol content
Ethylene glycol + headspace
Gas Chromatography of Mixed Alcohols
Dipropylene glycol content
Ethylene Glycol Purity Analysis
Determination of Ethanol Propylene Glycol by Gas Chromatography
Triethylene glycol
Ethanol in water for gas chromatography
Ethylene Glycol Content Analysis
Ethylene glycol refrigerant
GB/T 14571.2
GB/T 14228-1993
GB/T 14571.2-1993
GB/T 14571.2-2018
Ethylene glycol liquid phase
Method for detecting ethanol by gas chromatography
Diethylene glycol
Reagent ethanol (absolute ethanol) for high performance liquid chromatography
Trace Water Gas Chromatography in Ethanol
ethanol work
Which one is more harmful, propylene glycol or ethanol?
Can butanediol and pentanediol be measured using liquid phase?
Diethanolamine and triethanolamine absorb carbon dioxide
Diethylene glycol freezing point
Gas Chromatography Alcohol Tailing
Qualitative detection method of trichloroethanol liquid
Glycol and aldehyde content national and American standards
Ethylene glycol liquid chromatography
Gas chromatogram of ethylene glycol and diethylene glycol
Normal phase chromatography ethanol
Aladdin chromatography grade ethanol
Gas phase detection of n-propanol content in industrial ethanol
Standard value of aldehyde content in ethylene glycol in American Standard
Gas Chromatograph Diethylene Glycol
Physical constants of ethanol
How to detect ethanol content
Effects of mixing ethylene glycol and diethylene glycol
ASTM E2313-15 Aldehyde content in ethylene glycol
Ethanol HNMR
Polyethylene glycol 400 relative mass fraction
Is ethylene glycol similar to isopropyl alcohol?
Method for measuring ethanol in blood
Gas phase detection of stearyl alcohol
The difference between propylene glycol and ethanol
Vivergo ethanol
Determination of chloroplast pigment content ethanol method
Chlorohydrin liquid phase detection method
Ethanol PDE
Ursodiol
Alcohol gas phase liquid phase refractive index
How to use ethylene glycol freezing point meter
How long does it take to fix ethanol for Pi staining?
Industrial ethyl mercaptan
Ethylene glycol content detection method
What does ethylene glycol perform?
Diethylene glycol industry
Ethanol detection method gas chromatography
Phenethyl alcohol industry
Method for determination of ethanol content in water
Determination method for sulfate content in industrial ethylene glycol antimony
Monitoring and implementation of ethylene glycol
Ethylene glycol infrared spectrum
Ethylene glycol content in engine oil testing
Diethylene glycol industrial products
Detection method for ethylene glycol content
Ethylene glycol industrial grade product quality
Method for detecting ethanol content in water
Hydraulic oil glycol content
Polyethylene glycol molecular weight determination
The method for measuring water quality ethanol is environmentally friendly
Material ethylene glycol detection method
Polyethylene glycol execution
Trichloroethanol gas phase detection method
Petroleum grade ethylene glycol content
Determination method of total nitrogen in ethanol
Ethylene glycol concentration detection method
Gas chromatography standard alcohol sample
Method for detecting ethylene glycol in water
Gas phase analysis method for industrial methanol content
Ethanol gas calibration
Determination method of ethylene glycol acidity
What are the analysis methods for ethylene glycol in heavy alcohols?
Electricity load of coal-to-ethylene glycol
Determination method of chlorophyll content Ethanol determination method
Ethanol standard curve
Butanediol product quality
Diethylene glycol product quality
Detection method for absolute ethanol content
(2) Quality of ethylene glycol products
Diethylamine vapor phase method
Standard method for gas chromatography of ethylene glycol
Chlorohydrin content
Industrial preparation methods of ethanol
Ethylene glycol infrared standard spectrum
Dipropylene glycol quality
Ethanol production methods
Liquid phase determination method of ethylene glycol
Determination method of photosynthetic pigment content in ethanol
Ethanol industrial production methods
Anhydrous ethanol for industrial use
Phenylpropanediol content in alcoholic beverages
Standard curve method ethanol
Thermal conductivity of ethylene glycol
Determination method for propylene glycol content of starch
Industrial ethylene glycol diacetate industry
Methods for detecting ethanol in air
Method for detecting ethylene glycol content in water
Ethylene glycol diacetate product quality
Diethylene glycol vinyl ether for industrial use
Polyethylene glycol determination method
Diethylene glycol national standard detection method
Detection of ethylene glycol in food
Ethanol content test method
Determination method of ethanol in exhaust gas
Quality of ethanol in the air
Industrial glycol product quality
Glycol water quality
Determination of mercaptans in ethylene
Gas chromatography standard curve for measuring ethanol
Ethanol ambient air quality
National Standard Glycolic Acid Gas Chromatography
By-product ethylene glycol
Industrial waste gas ethanol detection method
Alcohol-free assay method
Gas chromatography standard curve for water ethanol system
Laboratory ethanol determination method
Ethanol iron zinc
There are several methods for measuring ethanol in the atmosphere.
Ethylene glycol + design standards
Ethylene glycol content in circulating water
How to calculate ethylene glycol viscosity
Ethylene glycol headspace method
Sodium ethoxide chemical industry
Production methods of glycol and ethanol
Ethanol process preparation method
Glycolic acid quality
Glyoxal Industrial Quality
Standard method for detection of exhaust gas ethanol
What are the relevant standards for diethylene glycol?
Traditional preparation methods of ethanol
Glycolic acid liquid chromatography
Diethylene glycol detection method
ethanol air quality
Two methods for industrial production of ethanol
Analysis method of ethylene glycol in glycerin
Ethanol vapor phase method
Method for detecting ethanol content in solids
Organic chemical diethylene glycol detection
Triethylene glycol quality
Ethylene Glycol International
How to store ethanol chromatography columns
Ethanol gas chromatography determination method
Analysis method of water ethanol content in ethanol system
Ethylene glycol industry
How to prepare ethanol
Glycolic acid test
ethanol execution
American Standard for Ethylene Glycol
Chromatographic method for determination of ethanol dehydration kinetics
Ethylene glycol gas chromatography detection method
International industrial ethanol preparation method
Chlorohydrin quality
Ethylene glycol ether company
Gas phase determination method of ethanol impurities
Ethylene glycol quality indicators and determination
Ethylene glycol content in cosmetics
Ethylene glycol product quality
Method for determining ethanol concentration by iodometric method
Diethylene glycol butyl ether liquid phase test method
Industrial ethanol quality
Fixed source ethylene glycol detection
Ethanol detection in water
Ethylene glycol emissions
Current industrial ethanol production methods
The simplest way to measure ethanol content
Ethylene glycol sampling
Ethanol gas phase detection method
Methods for producing methanol and ethanol
Trifluoroethanol national quality
Polyethylene glycol molecular weight test
Propylene glycol gas phase detection method
What are the methods for measuring propylene glycol content?
Polyethylene glycol industry
Polyethylene glycol industry
Ethanol quantitative detection method
Determination of ethanol in soil
Ethylene glycol concentration determination method
Gas chromatography method for detecting ethanol
Detection method of antimony glycol in air
Industrial diethylene glycol ether
How to make ethanol
Testing of hexylene glycol in materials
Hexanediol Testing in Materials
Determination method of relative density of ethanol
Test method for ethanol - Gas chromatography
Detection Method of Dipropylene Glycol by Gas Phase Mass Spectrometry
Test method for ethanol content in hexane
International Standard for Water Content in Ethylene Glycol
Gas chromatography ethanol standard curve
Chromatographic Analysis of Ethylene Glycol in Resins
Determination of Ethylene Glycol in Waste Gas
National standard method for measuring ethylene glycol in water
Ethanol quantitative detection method
Industrial ethanol preparation method
Preparation method of polyethylene glycol

《GB/T 14571.2-1993工业用乙二醇中二乙二醇和三乙二醇含量的测定 气相色谱法》由TC63(全国化学标准化技术委员会)归口,TC63SC4(全国化学标准化技术委员会石油化学分会)执行,主管部门为中国石油和化学工业联合会。


Scope

This standard specifies the gas chromatography method for the determination of diethylene glycol and triethylene glycol content in industrial ethylene glycol. This method is suitable for the determination of diethylene glycol and triethylene glycol in industrial ethylene glycol, and the minimum detection concentrations are 0.01% and 0.02% respectively.

Sample only — not a preview of GB/T 14571.2-1993
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