Liquid phase relative quantification

Liquid phase relative quantification, Total:200 items.

The international standard classification for "Liquid phase relative quantification" includes: Aromatic hydrocarbons , General methods of tests and analysis for food products , Aliphatic hydrocarbons , Biology. Botany. Zoology , Animal and vegetable fats and oils , Organic chemicals , Essential oils , Beekeeping , Extraction and processing of petroleum and natural gas , Equipment for the chemical industry , Measurement of volume, mass, density, viscosity , Other equipment for petroleum and natural gas industries , Photographic chemicals , Petroleum products in general , Coals , Ceramics in general , Surface active agents , Photographic equipment. Projectors .

The Chinese standard classification for "Liquid phase relative quantification" includes: General organic chemicals , Basic standards and general methods , Environmental Condition and General Test Method , Grease and oil processing and products , Coal tar processed products , Fragrances and flavors , Beekeeping, silkworm keeping , Petroleum development , Food Additives and flavoring agents in general , Special chemical instrument and meter , Mechanics Measurement , Petroleum drilling , Photographic-grade chemicals , Basic organic chemicals , Other petroleum products , Diagnostic standard for occupational diseases , Coal analysis methods , Daily use glass, ceramic, enamel and plastic products in general , Ceramic and glass in general , Surface active agent , Lens .

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

GB/T 38479-2021 Determination of chitosan content―High performance liquid chromatography
GB/T 21927-2008 Determination of Tertiary Butylhydroquinone in foods - High-Performance of liquid chromatography
GB/T 4511.1-2008 Coke - Determination of true relative density apparent relative density and porosity
GB/T 28912-2025 Methods for Determining Relative Permeability of Two-Phase Fluids in Rocks
GB/T 5177.3-1985 Determination of mean relative molecular mass for industrial alkylbenzene--Gas-liquid chromatographic method
GB/T 39824-2021 Determination of relative strength of dyes in solution
GB/T 14455.4-1993 Essential oils. Determination of relative density
GB/T 19427-2022 Determination of 12 phenolic compounds in propolis— HPLC-MS/MS method and HPLC method
GB/T 38169-2019 Determination of caulerpin content—High performance liquid chromatography
GB/T 28912-2012 Test method for two phase relative permeability in rock
GB/T 23208-2008 Determination of 450 pesticides and related chemicals residues in fugu eel and prawn - LC-MS-MS method
GB/T 25154-2010 Capacitive liquid moisture detector
GB/T 17528-2009 Determination of piperine content—Method using HPLC
GB/T 5178-1985 Determination of mean relative molecular mass for technical straight-chain sodium alkyl benzene sulphonates; Gas-liquid chromatographic method
GB/T 11540-2008 Fragrance/Flavor substances—Determination of relative density

National Metrological Verification Regulations of the People's Republic of China

JJG 171-2016 Ralative Density Balance for Liquid
JJG(地质) 1021-1994 Verification Regulations for Relative Density Meter
JJG 705-2014 Verification regulation for liquid chromatographs
JJG 705-2002 Verification Regulation of Liquid Chromatographs
JJG 171-2004 Verification Regulation of Ralative Density Balance for Liquid

Inner Mongolia Provincial Standard of the People's Republic of China

DB15/T 4045-2025 Method for Determining Relative Quality of Grains

Professional Standard - Petroleum

SY 6677-2007 Calibration Method of Drilling Fluid Solid Phase Quantity Meter
SY/T 5345-1999 Oil-water relative permeability measurement
SY/T 5843-1997 Gas-water relative permeability measurement
SY/T 5345-2007 Test method for relative permeability
SY/T 5382-1991 Drilling Fluid Solid Phase Content Meter
SY 5382-2009 Drilling Fluid Solid Phase Content Meter
SY/T 6677-2022 Calibration method of drilling fuid retort assembly
SY/T 5382-2009 Drilling fluid retort for liquid and solid analysis
SY/T 6677-2007 Calibration method of mnd retort assembly

Professional Standard - Chemical Industry

HG/T 2535-2007 Photographic chemicals The method for the determination of sensitization dyes Reversed phase high performance liquid chromatography
HG/T 2535-1993 Photographic chemicals. The method for the determination of sensitization dyes. Reversed phase high performance liquid chromatography
HG/T 3920-2006 Capacitive liquid moisture detector
HG/T 2414-2007 Photographic chemicals The method for the determination of the color couples Reversed phase high performance liquid chromatography
HG/T 2414-1993 Photographic chemicals Coupler--Determination of assay --Reversed phase high performance liquid chromatography

Professional Standard - Petrochemical Industry

SH/T 1612.7-1995 Determination for p-formylbenzoic acid and p-toluic acid in industrial purified terephthalic acid
SH/T 0583-1994 Determination method for hydrocarbon relative molecular weight (thermoelectric measurement vapor pressure method)
SH/T 0221-1992(2004) Determination of density or relative density of liquefied petroleum gas
SH/T 0068-2002 Standard test method for density or relative density of coolant concentrates and engine coolants by the hydrometer

Professional Standard - Agriculture

NY/T 4743-2025 Determination of the Relative Content of Pollen in Honey
NY/T 4311-2023 Content determination of polysaccharide in animal bones-Liquid chromatography method
NY/T 82.5-1988 Determination of Relative Density

Group Standards of the People's Republic of China

T/WHAS 066-2024 Determination of gestrinone - High-performance liquid chromatography
T/SDAA 0083-2024 Determination of tildipirosin― High performance liquid chromatography
T/GZZJ 04-2019 Determination of p-hydroxyacetophenone in cosmetics. High performance liquid chromatography
T/SSX 007-2023 Vegetable oils- Determination of tocopherol and tocotrienol contents by reversed-phase high performance liquid chromatography
T/GDFCA 103-2023 Determination of volatile flavoured compounds in Amomi fructus Gas chromatography-mass spectrometry
T/WHAS 065-2024 Determination of ganaxolone - High-performance liquid chromatography

Guangxi Provincial Standard of the People's Republic of China

DB45/T 781-2011 Determination of the content of arcinine in Jigucao by high performance liquid chromatography

Professional Standard - Hygiene

WS/T 56-1996 Urine—Determination of p-aminophenol—High performance liquid chromatographic method
WS/T 58-1996 Urine - Determination of p-nitrophenol - High performance liquid chromatographic method

Liaoning Provincial Standard of the People's Republic of China

DB21/T 2752-2017 Determination of Chitooligosaccharide Content by Liquid Chromatography

Professional Standard - Commodity Inspection

SN/T 2087-2008 Determination of chlorine in coal—High performance liquid chromatography
SN/T 4891-2017 Determination of Spirotetramat residue in foodstuffs for export—HPLC andLC-MS/MS method
SN/T 2544-2010 Determination of content in glycerine—High performance liquid chromatography
SN/T 2492-2010 Determination of molecular weight of liquefied petroleum gas—Gas chromatography

National Metrological Technical Specifications of the People's Republic of China

JJF 2157-2024 Calibration Specification for Drilling Fluid Retort Assemblies

Professional Standard - Military and Civilian Products

WJ 2122-1993 Determination of water quality 2,4-dihydroxy-1,3,5-trinitrobenzene (stephanic acid) by reversed-phase ion-pair liquid chromatography

Shandong Provincial Standard of the People's Republic of China

DB37/T 4155-2020 Determination of Water Quality Chlorpyrifos Solid Phase Extraction-Liquid Chromatography
DB37/T 4161-2020 Determination of Water Quality Aldicarb Solid Phase Extraction-Liquid Chromatography
DB37/T 3027-2017 Determination of para-red in lip cosmetics by high performance liquid chromatography
DB37/T 4148-2020 Determination of Water Quality 2,4-D by Solid Phase Extraction-Liquid Chromatography

Professional Standard - Light Industry

QB 974-1984 Determination of Relative Density of Essential Oils
QB/T 2345-1997 Determination of the Average Relative Molecular Mass of Fatty Alkyl Dimethyl Betaines by Gas-Liquid Chromatography
QB/T 1545-1992 Measurement Method for Relative Viscosity, Flowability and Thixotropy of Ceramic Slurry
QB/T 2345-2013 Determination of mean relative molecular weight of alkyldimethylbetain by GC
QB/T 1545-2015 Test method for relative viscosity||relative liquidity and thixotropy of ceramic

Professional Standard - Judicatory

SF/T 0168-2024 Qualitative and quantitative detection of colchicine in blood and urine by liquid chromatography-mass spectrometry

Professional Standard - Machinery

JB/T 8248.2-1999 Method for measurement for effective aperture and relative aperture of camera lenses

Anhui Provincial Standard of the People's Republic of China

DB34/T 1537-2011 Determination of Curcumin in food Liquid chromatography

Professional Standard - Environmental Protection

HJ 478-2009 Water quality-Determination of polycyclic aromatic hydrocarbons byliquid-liquid extraction and solid-phase etracton-High performance liquid chromatography

Yunnan Provincial Food Standard of the People's Republic of China

DBS53/ 014-2013 Determination of Parabens in Food by High Performance Liquid Chromatography

National Health Commission of the People's Republic of China

GB 23200.13-2016 National Food Safety Standard―Determination of 448 pesticides residues in tea Liquid chromatography-mass spectrometry

Japanese Industrial Standards Committee (JISC)

JIS Z 8804:1976 Methods of Measuring Specific Gravity of Liquid
JIS B 7525-3:2013 Hydrometer-type relative density meters

International Organization for Standardization (ISO)

ISO 18329:2004 Milk and milk products - Determination of furosine content - Ion-pair reverse-phase high-performance liquid chromatography method
ISO 18329:2004|IDF 193:2004 Determination of furosine content in milk and dairy products by ion-pair reversed-phase high-performance liquid chromatography
ISO 18329:2004 | IDF 193:2004 Milk and milk products — Determination of furosine content — Ion-pair reverse-phase high-performance liquid chromatography method
ISO 7760:1986 Photographic processing waste; Determination of hydroquinone content; Spectrophotometric method
ISO 13875:2005 | IDF 178:2005 Liquid milk — Determination of acid-soluble beta-lactoglobulin content — Reverse-phase HPLC method
ISO 5072:1997 Brown coals and lignites - Determination of true relative density and apparent relative density
ISO 13875:2005 Liquid milk - Determination of acid-soluble -lactoglobulin content - Reverse-phase HPLC method
ISO 15302:1998 Animal and vegetable fats and oils - Determination of benzo[a]pyrene content - Reverse-phase high-performance liquid chromatography method
ISO 13875:2005|IDF 178:2005 Determination of acid-soluble β-lactoglobulin content in liquid milk by reversed-phase high performance liquid chromatography
ISO 5072:2021 Brown coals and lignites — Determination of true relative density and apparent relative density
ISO 1014:1975 Coke — Determination of true relative density, apparent relative density and porosity
ISO 1014:2021 Coke — Determination of true relative density, apparent relative density and porosity
ISO 1014:1985 Coke; Determination of true relative density, apparent relative density and porosity
ISO 5072:2013 Brown coals and lignites.Determination of true relative density and apparent relative density
ISO 3233:1984 Paints and varnishes; Determination of volume of dry coating (non-volatile matter) obtained from a given volume of liquid coating
ISO 483:1988 Plastics; small enclosure for conditioning and testing using aqueous solutions to maintain relative humidity at constant value

British Standards Institution (BSI)

BS ISO 18329:2004 Milk and milk products - Determination of furosine content - Ion-pair reverse-phase high-performance liquid chromatography method
BS ISO 13875:2005 Liquid milk - Determination of acid-soluble -lactoglobulin content - Reverse-phase HPLC method
BS ISO 5072:2021 Brown coals and lignites. Determination of true relative density and apparent relative density
BS ISO 1014:2021 Coke. Determination of true relative density, apparent relative density and porosity
BS EN 12823-2:2000 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Measurement of -carotene
BS ISO 5072:2013 Brown coals and lignites. Determination of true relative density and apparent relative density
BS EN 12822:2014 Foodstuffs. Determination of vitamin E by high performance liquid chromatography. Measurement of -, $Gb-, - and $Gd-tocopherol
BS EN 12822:2000 Foodstuffs - Determination of vitamin E by high performance liquid chromatography - Measurement of -, -, - and -tocopherols
BS EN ISO 105-Z10:1999 Textiles - Tests for colour fastness - Determination of relative colour strength of dyes in solution
BS EN 18033:2024 Food authenticity. Quantitation of equine DNA relative to mammalian DNA in raw beef (meat)
21/30423448 DC BS ISO 1014. Coke. Determination of true relative density, apparent relative density and porosity

Danish Standards Foundation

DANSK DS/ISO 18329:2004 Milk and milk products - Determination of furosine content - Ion-pair reverse-phase high-performance liquid chromatography method
DS/ISO 18329:2004 Milk and milk products - Determination of furosine content - Ion-pair reverse-phase high-performance liquid chromatography method
DANSK DS/ISO 13875:2007 Liquid milk - Determination of acid-soluble beta-lactoglobulin content - Reverse-phase HPLC-method
DANSK DS/ISO 5072:2013 Brown coals and lignites - Determination of true relative density and apparent relative density
DS/ISO 5072:2013 Brown coals and lignites - Determination of true relative density and apparent relative density
DANSK DS/ISO 13859:2014 Soil quality - Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 18329:2014 Milk and milk products -- Determination of furosine content -- Ion-pair reverse-phase high-performance liquid chromatography method
OS GSO ISO 13875:2014 Liquid milk -- Determination of acid-soluble beta-lactoglobulin content -- Reverse-phase HPLC method
OS GSO 1208:2002 Determination of density and relative density of liquids by digtal density meter .
OS GSO ISO 5072:2013 Brown coals and lignites - Determination of true relative density and apparent relative density
OS GSO ISO 9894:2017 Subsampling of uranium hexafluoride in the liquid phase
OS GSO ISO 13859:2015 Soil quality -- Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)

Argentine Institute of Standardization

IRAM 6505-1950 Relative weight determination of liquids with the aid of a density meter
IRAM 6622-1960 How to determine the relative density of liquefied petroleum gas
IRAM 10503-1958 Method for determination of relative specific mass of stirred soil

Spanish Association for Standardization (UNE)

UNE 55-806-1990 Determination of relative molecular mass of linear sodium alkylphenyl sulfate detergent by gas-liquid chromatography
UNE 21317:1989 MEASUREMENT OF RELATIVE PERMITIVITY, DIELECTRIC DISSIPATION FACTOR ON D.C. RESISTIVITY OF INSULATING LIQUIDS.

Czech Standards Institute (UNMZ)

CSN 40 4010-1971 Relative measurements of activity and partical emission of radioactive products. Speciíic activity relative measurements in liquid saturated layer.

American Society for Testing and Materials (ASTM)

ASTM D3674-89(1993)e1 Determination of relative extrusion mass of carbon black
ASTM F557-79e1 Relative working measurement method
ASTM E104-20a Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ASTM E104-02(2012) Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ASTM E104-02 Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ASTM E104-02(2007) Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ASTM E104-20 Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ASTM E104-85(1996) Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
ASTM D5032-19 Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Glycerin Solutions
ASTM D5032-97(2003) Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Glycerin Solutions
ASTM RR-E15-1023 1993 Supporting Data for ASTM D891, Tests for Specific Gravity, Apparent of Liquid Industrial Chemicals
ASTM RR-D16-1048 2013 D7884-Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Reverse Phase High Performance Liquid Chromatography
ASTM RR-D16-1073 2019 D7884-Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Reverse Phase High Performance Liquid Chromatography
ASTM E746-18 Standard Practice for Determining Relative Image Quality Response of Industrial Radiographic Imaging Systems
ASTM E746-17 Standard Practice for Determining Relative Image Quality Response of Industrial Radiographic Imaging Systems
ASTM E594-96(2001) Standard Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography

Standards New Zealand

NZS 8311:1970 Method for the determination of the relative milk-coagulating power of rennet solutions

South African Bureau of Standard

SANS 5072:2005 Brown coals and lignites - Determination of true relative density and apparent relative density
SANS 1014:1985 Coke - Determination of true relative density, apparent relative density and porosity

Association Francaise de Normalisation

NF EN ISO 4256:1998 Liquefied petroleum gases - Determination of relative vapor pressure - LPG method
NF M03-039*NF ISO 1014:2004 Coke - Determination of true relative density, apparent relative density and porosity.
NF V76-111:1980 Fruit and vegetable juices. Determination of volatile substances (gas/liquid chromatographic method).
NF ISO 1014:2004 Coke - Determination of true relative density, apparent relative density and porosity
NF M01-018*NF ISO 5072:2013 Brown coals and lignites - Determination of true relative density and apparent relative density
NF EN 15452:2008 Fertilizers - Determination of chelating agents - Determination of iron chelated by o,p-EDDHA by high-performance liquid chromatography with reversed phase polarity
NF V03-130-2*NF EN 12823-2:2001 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 2 : measurement of beta-carotene
NF M03-039:1982 SOLID FUELS. COKE. DETERMINATION OF TRUE RELATIVE DENSITY,APPARENT RELATIVE DENSITY AND POROSITY.

German Institute for Standardization

DIN 55981:1979-05 Determination of relative hue of near white specimens
DIN EN 15452:2008-11 Fertilizers - Determination of chelating agents - Determination of iron chelated by o,p- EDDHA by reversed phase HPLC; German version EN 15452:2008
DIN 55978:1981 Testing of dyestuffs; determination of the relative tinting strength in solutions; spectrophotometric method
DIN 55978:2021 Testing of dyestuffs - Determination of the relative tinting strength in solutions - Spectrophotometric method
DIN 55978 E:2020-11 Testing of dyestuffs - Determination of the relative tinting strength in solutions - Spectrophotometric method
DIN 55978:2021-04 Testing of dyestuffs - Determination of the relative tinting strength in solutions - Spectrophotometric method
DIN 55978:1981-07 Testing of dyestuffs; determination of the relative tinting strength in solutions; spectrophotometric method
DIN 53164 Beiblatt 1:1988 Determination of relative scattering properties of paints and pigments Determination of relative scattering properties of titanium dioxide

Indonesia Standards

SNI 19-4956-1998 Test method for relative density, specific gravity and density (of homogeneous liquid)

GCC Standardization Organization

GSO ISO 13875:2014 Liquid milk -- Determination of acid-soluble beta-lactoglobulin content -- Reverse-phase HPLC method
GSO ISO 9894:2017 Subsampling of uranium hexafluoride in the liquid phase
GSO 1208:2002 Determination of density and relative density of liquids by digtal density meter .
GSO ISO 13859:2015 Soil quality -- Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 13875:2016 Liquid milk -- Determination of acid-soluble beta-lactoglobulin content -- Reverse-phase HPLC method
BH GSO OIML R121:2024 The Scale of Relative Humidity of Air Certified Against Saturated Salt Solutions
BH GSO ISO 5072:2016 Brown coals and lignites - Determination of true relative density and apparent relative density
BH GSO ISO 650:2024 Relative density 60/60 ْ F hydrometers for general purposes

International Dairy Federation (IDF)

IDF/RM 217-2009 Cheese - Determination of nisin A content by LC-MS and LC-MS-MS

American National Standards Institute （ANSI)

ANSI/UL 340-2009 Standard for Tests for Comparative Flammability of Liquids
ANSI/ASTM D5032:2011 Practice for Maintaining Constant Relative Humidity by Means of Aqueous Glycerin Solutions

American Association of Textile Chemists and Colorists

AATCC 182-2017 Relative Color Strength of Dyes in Solution
AATCC 182-2000 Relative Color Strength of Dyes in Solution

Korean Agency for Technology and Standards (KATS)

KS E ISO 5072:2009 Brown coals and lignites－Determination of true relative density and apparent relative density
KS E ISO 5072-2009(2024) Brown coals and lignites－Determination of true relative density and apparent relative density
KS E ISO 5072-2025 Brown coals and lignites — Determination of true relative density and apparent relative density
KS E ISO 5072-2019 Brown coals and lignites－Determination of true relative density and apparent relative density
KS A ISO 9894-2022 Subsampling of uranium hexafluoride in the liquid phase
KS E ISO 5072-2009(2019) Brown coals and lignites－Determination of true relative density and apparent relative density
KS E ISO 1014-2002(2017) Metallic and other non-organic coatings－Measurement of coating thicknesses－Fizeau multiple-beam interferometry method
KS E ISO 1014-2022 Coke — Determination of true relative density, apparent relative density and porosity
KS E ISO 1014:2022 Coke — Determination of true relative density, apparent relative density and porosity
KS E ISO 1014:2002 Coke-Determination of true relative density, apparent relative density and porosity
KS A ISO 9894-2012(2017) Subsampling of uranium hexafluoride in the liquid phase

Ente Nazionale Italiano di Unificazione

UNI EN ISO 4256:2001 Liquefied petroleum gases - Determination of gauge vapour pressure - LPG method
UNI EN ISO 15302:2007 Animal and vegetable fats and oils - Determination of benzo[a]pyrene content - Reverse-phase high-performance liquid chromatography method
UNI EN ISO 105-Z10:1999 Textiles - Tests for olour fastness - Determination of relative colour strength of dyes in solution

COMMISSION FOR THE STANDARDS, METROLOGY AND QUALITY OF VIETNAM (STAMEQ)

TCVN 7787-2007 Dried skimmed milk.Determination of vitamin D content using high-performance liquid chromatography

International Telecommunication Union (ITU)

ITU-T P.72-1984 Measurement of reference equivalents and relative equivalents
ITU-T P.72-1980 Measurement of reference equivalents and relative equivalents
ITU-T P.72-1976 Measurement of reference equivalents and relative equivalents

Bureau of Indian Standards

IS 14444-2023 Textile Dyestuffs-Method for Determination of Relative Colour Strength of Dyes in Solution

Standard Association of Australia （SAA）

AS 3583.6:1991 Methods of test for supplementary cementitious materials for use with portland cement - Determination of relative water requirement and relative strength
AS 3583.6:1995 Methods of test for supplementary cementitious materials for use with portland cement - Determination of relative water requirement and relative strength

Gosstandart of Russia

GOST 32307-2013 Meat and meat products. Determination of fat-soluble vitamins by high performance liquid chromatography
GOST ISO 13493-2014 Meat and meat products. Method for determination of chloramphenicol (levomycetin) content using liquid chromatography
GOST R 70544-2022 Coke. Methods for the determination of true relative density, apparent relative density and porosity
GOST 32916-2014 Milk and milk products. Determination of vitamin D mass fraction by high performance liquid chromatography method
GOST 28995-1991 Liquefied anhydrous ammonia for industrial use. Determination of water content. Gas chromatographic method

Canadian General Standards Board （CGSB)

CAN/BNQ 2501-070-M86:1986 Soils - Determination of relative density

Belgian Standards Institute

NBN T 63-161-1988 Surface active agents - Technical straight-chain sodium alkylbenzene sulfonates - Determination of mean relative molecular mass by gas-liquid chromatography

Portuguese Institute of Quality

NP 3757-1989 SOLID FUELS Cokes Determination of true relative density, apparent relative density and porosity

National Electrical Manufacturers Association（NEMA)

NEMA C12.24 TR-2011 Definitions for Calculations of VA, VAh, VAR, and VARh for Poly-Phase Electricity Meters

Magyar Szabványügyi Testület

MSZ KGST 2417-1980 Relative density measurement of the same size