Calibration method of conductivity cell constant

Calibration method of conductivity cell constant, Total:186 items.

The international standard classification for "Calibration method of conductivity cell constant" includes: Insulating fluids , Piezoelectric and dielectric devices , Conducting materials , Electronic components in general , Gaseous fuels , Electrical and electronic testing , Extraction and processing of petroleum and natural gas , Chemical reagents .

The Chinese standard classification for "Calibration method of conductivity cell constant" includes: Graphite material , Special electronic technology material , Petroleum products in general , Petroleum extraction , Technical Management , Technical management , Technical management , Chemical reagent in general .

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

GB/T 3074.4-2016 Method for the determination of the coefficient of thermal expansion of graphite electrodes
GB/T 3074.4-2003 Method for the determination of the coefficient of thermal expansion of graphite electrodes
GB/T 11297.11-2015 Test method for dielectric constant of pyroelectric materials
GB/T 5597-1999 Test method for complex permittivity of solid dielectric materials at microwave frequencies
GB/T 12634-1990 Test methods for electroelastic contants of piezoelectric crystals
GB/T 11297.11-1989 Test method for the dielectric constant of pyroelectric materials
GB 7265.1-1987 Test Method for Microwave Complex Permittivity of Solid Dielectric Perturbation Method
GB/T 18339-2001 Test method for motor gasoline octane number(dielectric constant method)
GB/T 7265.1-1987 Test method for complex permittivity of solid dielectric materials at microwave frequencies; Perturbation method
GB 7265.1-87 Test method for complex permittivity of solid dielectric materials at microwave frequencies--Perturbation method
GB/T 7265.2-1987 Test method for the complex permittivity of solid dielectric materials at microwave frequencies--
GB 7265.2-1987 Test method for the complex permittivity of solid dielectric materials at microwave frequencies;

Professional Standard - Agriculture

807兽药典一部-2015 Appendix Contents 0600 Determination of Physical Constants 0681 Determination of Conductivity of Pharmaceutical Water
81药典四部-2020 0600 Determination of physical constants 0681 Determination of electrical conductivity of pharmaceutical water
100药典四部-2015 0600 Determination of physical constants 0681 Determination of electrical conductivity of pharmaceutical water

Professional Standard - Environmental Protection

HJ 802-2016 Soil quality - Determination of conductivity - Electrode method

Professional Standard - Petroleum

SY 6528-2002 Measuring method of rock sample dielectric constant
SY/T 6528-2002 Test method of the rock dielectric constant

Professional Standard - Electron

SJ 20512-1995 Test methods for permittivity and permeability of microwave high loss solid materials
SJ 2214.6-1982 Method of measurement for collector-emitter reverse breakdown voltage of semiconductor phototransistors
SJ 2215.7-1982 Method of measurement for collector-emitter reverse breakdown voltage of semiconductor photocouplers (diodes)
SJ/T 2214-2015 Measuring methods for semiconductor photodiode and phototransistor
SJ 2214.5-1982 Method of measurement for junction capacitance of semiconductor photodiodes
SJ 1388-1978 Methods of measurement for anode conductance of noise-generator diodes
SJ 2214.3-1982 Method of measurement for dark current of semiconductor photodiodes
SJ/T 10143-1991 Test methods for complex permittivity of solid dielectric in microwave frequency band - Method for reentering into gravity
SJ/Z 9010.12-1987 Measurements of electrical properties of electronic tubes and valves--Part 12: Methods of measuring for electrode resistance, transcondductance, amplification factor, conversion resistance and conversion transconductance
SJ 2214.8-1982 Method of measurement for dark current voltage of semiconductor phototransistors

Professional Standard - Chemical Industry

HG/T 3500-1982 Method for Determination of Polarity Constant of Chemical Reagent Gas Chromatography Stationary Liquid
HG/T 3500-2011 Chemical reagent-Test method for polarity constant of liquid stationary phase in gas chromatography

Professional Standard - Geology

DZ/T 0064.6-2021 Methods for analysis of groundwater quality- Part 6: Determination of conductivity- Electrode method

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 1905-2017 Method for determination of thermal conductivity of graphite film products at room temperature

工业和信息化部

SJ/T 11792-2022 Test method for conductivity of electrode materials used in lithium ion battery

Group Standards of the People's Republic of China

T/QGCML 030-2020 Conventional Electrical Standards for Diode Diffusion Sheets
T/CEIA 002-2023 Measuring Method for Complex Dielectric Constant of Solid Materials at High Temperature
T/CSTM 01024-2023 Failure analysis method of thermal imaging-assisted positioning for conductive anodic filament

未注明发布机构

ASTM RR-D27-1015 2003 D0924-Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
BS EN IEC 62631-2-3:2024 Dielectric and resistive properties of solid insulating materials - Relative permittivity and dissipation factor. Contact electrode method for insulating films. AC methods
ASTM RR-D35-2000 2020 D4491/D4491M-Test Methods for Water Permeability of Geotextiles by Permittivity

Professional Standard - Railway

TB/T 2829-1997 Definition and calculation method of current and voltage commonly used in traction substation

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

GJB 1615-1993 Methods for determination of physical constants of poisons

Hebei Provincial Standard of the People's Republic of China

DB13/T 308-1997 Determination of Octane Number of Motor Gasoline by Dielectric Constant Method

RU-GOST R

GOST 18986.0-1974 Semiconductor diodes. Measuring methods for electrical parameters. General requirements
GOST 18986.4-1973 Semiconductor diodes. Methods for measuring capacitance
GOST 18986.6-1973 Semiconductor diodes. Method for measuring recovery charge
GOST 18604.1-1980 Transistors bipolar. Method for measuring collector-tobase time constant at high frequencies
GOST 19656.0-1974 Semiconductor UHF diodes. Measurement methods of electrical parameters. General conditions
GOST 18986.1-1973 Semiconductor diodes. Method for measuring direct reverse current
GOST 18986.3-1973 Semiconductor diodes. Method of measuring of direct forward voltage and direct forward current
GOST 18986.10-1974 Semiconductor diodes. Methods for measuring inductance
GOST 16747-1980 Condenser paper. Method for determining number of current-conducting insertions
GOST 33401-2015 Testing of chemicals of environmental hazard. Determination of the dissociation constants in water by titrimetric, spectrophotometric and conductometric methods
GOST 18986.24-1983 Semiconductor diodes. Measurement method of breakdown voltage
GOST 21107.3-1975 Gas discharge devices. Decatrons. Polyatrons. Methods for measurement of electrical parameters
GOST 19656.10-1988 Semiconductor microwave switching and limiter diodes. Methods of measuring loss resistances
GOST R 53120-2008 Honey. Method for determination of electroconductivity
GOST 19656.1-1974 Semiconductor UHF mixer and detector diodes. Measurement method of voltage standing-wave ratio

American Society for Testing and Materials (ASTM)

ASTM D1082-17 Standard Test Method for Dissipation Factor and Permittivity (Dielectric Constant) of Mica
ASTM D1082-17(2024) Standard Test Method for Dissipation Factor and Permittivity (Dielectric Constant) of Mica
ASTM D2149-13 Standard Test Method for Permittivity (Dielectric Constant) And Dissipation Factor Of Solid Ceramic Dielectrics At Frequencies To 10 MHz And Temperatures To 500&#176C
ASTM D924-23 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM D150-18 Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM F83-71(2002) Standard Practice for Definition and Determination of Thermionic Constants of Electron Emitters
ASTM F83-71(2009) Standard Practice for Definition and Determination of Thermionic Constants of Electron Emitters
ASTM F83-71(2013) Standard Practice for Definition and Determination of Thermionic Constants of Electron Emitters
ASTM F83-71(1996)e1 Standard Practice for Definition and Determination of Thermionic Constants of Electron Emitters
ASTM D150-87 Standard Test Methods for A-C Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials
ASTM D1531-01 Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures
ASTM D1531-95 Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures
ASTM D1531-01e1 Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures
ASTM D1082-00(2005) Standard Test Method for Dissipation Factor and Permittivity (Dielectric Constant) of Mica
ASTM D1082-00 Standard Test Method for Dissipation Factor and Permittivity (Dielectric Constant) of Mica
ASTM D3380-22 Standard Test Method for Relative Permittivity (Dielectric Constant) and Dissipation Factor of Polymer-Based Microwave Circuit Substrates
ASTM D4491/D4491M-16 Standard Test Methods for Water Permeability of Geotextiles by Permittivity
ASTM D1082-00(2011) Standard Test Method for Dissipation Factor and Permittivity (Dielectric Constant) of Mica
ASTM D4491/D4491M-22 Standard Test Methods for Water Permeability of Geotextiles by Permittivity
ASTM D2520-21 Standard Test Methods for Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures to 1650 °C
ASTM D8153-22 Standard Test Method for Determination of Soil Water Contents Using a Dielectric Permittivity Probe
ASTM D1531-06 Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures
ASTM G100-89(2021) Standard Test Method for Conducting Cyclic Galvanostaircase Polarization
ASTM G100-89(1999) Standard Test Method for Conducting Cyclic Galvanostaircase Polarization
ASTM D5493-06(2011) Standard Test Method for Permittivity of Geotextiles Under Load
ASTM D3380-90(1995)e1 Standard Test Method for Relative Permittivity (Dielectric Constant) and Dissipation Factor of Polymer-Based Microwave Circuit Substrates
ASTM C1025-91(2000) Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite
ASTM D5568-95 Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies
ASTM D5568-22a Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies Using Waveguide
ASTM D5568-01 Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies
ASTM D924-99e2 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM D5493-93(2003) Standard Test Method for Permittivity of Geotextiles Under Load
ASTM D924-08 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM D924-15 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM D5568-08 Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies
ASTM D924-99e1 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM B84-07 Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors
ASTM B84-07(2013) Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors
ASTM D150-98 Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM D150-98(2004) Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM D924-04 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM D924-03a Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM E423-71(2019) Standard Test Method for Normal Spectral Emittance at Elevated Temperatures of Nonconducting Specimens
ASTM D924-03 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM E1004-09 Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy-Current) Method
ASTM D4370-01 Standard Test Methods for Acid and Base Milliequivalent Content of Electrocoat Bath
ASTM E1004-23 Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy Current) Method
ASTM D5493-06 Standard Test Method for Permittivity of Geotextiles Under Load
ASTM D4370-84(1994) Standard Test Methods for Acid and Base Milliequivalent Content of Electrocoat Bath
ASTM D5288-97(2004) Standard Test Method for Determining the Tracking Index of Electrical Insulating Materials Using Various Electrode Materials (Excluding Platinum)
ASTM B84-90(2001) Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors
ASTM D4370-01(2006) Standard Test Methods for Acid and Base Milliequivalent Content of Electrocoat Bath
ASTM B84-07(2019) Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors
ASTM B84-90(1995)e1 Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors
ASTM D3380-14 Standard Test Method for Relative Permittivity (Dielectric Constant) and Dissipation Factor of Polymer-Based Microwave Circuit Substrates
ASTM C1025-15 Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite
ASTM D5568-22 Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies Using Waveguide
ASTM G5-94(2011)e1 Standard Reference Test Method for Making Potentiostatic and Potentiodynamic Anodic Polarization Measurements
ASTM D4491/D4491M-15 Standard Test Methods for Water Permeability of Geotextiles by Permittivity
ASTM G5-13e2 Standard Reference Test Method for Making Potentiodynamic Anodic Polarization Measurements
ASTM G5-13 Standard Reference Test Method for Making Potentiodynamic Anodic Polarization Measurements
ASTM D4491-99a(2014)e1 Standard Test Methods for Water Permeability of Geotextiles by Permittivity
ASTM E1004-17 Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy Current) Method
ASTM D5493-06(2016) Standard Test Method for Permittivity of Geotextiles Under Load
ASTM D5288-14 Standard Test Method for Determining Tracking Index of Electrical Insulating Materials Using Various Electrode Materials (Excluding Platinum)
ASTM D5288-97 Standard Test Method for Determining the Tracking Index of Electrical Insulating Materials Using Various Electrode Materials (Excluding Platinum)
ASTM D1816-12(2019) Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes
ASTM D877-87(1995) Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
ASTM D877-00 Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
ASTM D1673-94(2004) Standard Test Methods for Relative Permittivity And Dissipation Factor of Expanded Cellular Polymers Used For Electrical Insulation
ASTM D1673-94(1998) Standard Test Methods for Relative Permittivity And Dissipation Factor of Expanded Cellular Polymers Used For Electrical Insulation

CZ-CSN

CSN 35 8767-1982 Semiconductor diodes Methods of electrical parameters measurement
CSN 35 8769-1983 Semiconductor Zener diodes. Electric parameters measurement methods
CSN 35 8768-1983 Semiconductor switching diodes. Electric parameters measurement methods
CSN 35 8771-1970 Thyristors. Method of measuring gate trigger voltage and gate trigger current
CSN 35 8781-1983 Mixing and detection semiconductor UHF diodes Electric parameter Measurement methods
CSN 35 8786-1983 Varicaps. Electric parameter measurement methods

American National Standards Institute （ANSI)

ANSI/ASTM D150:2018 Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ANSI/ASTM C1025:2000 Test Method for Modulus of Rupture in Bending of Electrode Graphite
ANSI/ASTM B84:2001 Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors

Institute of Electrical and Electronics Engineers (IEEE)

IEEE Std 178-1958*ANSI C83.23-1960 IEEE Standards on Piezoelectric Crystals:Determination of The Elastic. Piezoelectric and Dielectric Constants- The Electro mechanical Coupling Factor, 1958

SCC

AS 3706.9:1990 Geotextiles - Methods of test - Determination of permittivity
BS 4618-2.1:1970 Recommendations for the presentation of plastics design data. Electrical properties-Permittivity
BS 2782-2 METHOD 205 TO 207:1957 Methods of testing plastics. Electrical properties Method 205, 206 and 207 power factor and permittivity at 50 cycles per second, power factor and permittivity at 800 to 1600 cycles per second, power factor and permittivity at 10 kilocycles to 100 mega.

Korean Agency for Technology and Standards (KATS)

KS C 2135-2021 Testing methods for AC loss characteristics and permittivity(Dielectric constant) of solid electrical insulation
KS C 2135-1996(2021) Testing methods for AC loss characteristics and permittivity(Dielectric constant) of solid electrical insulation
KS C 2136-2021 Testing methods for complex permittivity (Dielectric constant) of solid electrical insulating materials at high frequencies and high temperatures
KS C 2136-1996(2021) Testing methods for complex permittivity (Dielectric constant) of solid electrical insulating materials at high frequencies and high temperatures
KS C 2134-1996 Testing method for dissipation factor and permittivity parallel with laminations of laminated sheet and plate materials
KS C 2136-1996(2016) Testing methods for complex permittivity (Dielectric constant) of solid electrical insulating materials at high frequencies and high temperatures
KS I 8001-2009 General rules for electrical conductivity measuring method
KS D ISO 15351:2003 Steel and iron-Determination of nitrogen content-Thermal conductimetric method after fusion in a current of inert gas(Routine method)
KS C 6050-1985(2000) MEASURING METHODS FOR BIPOLAR DIGITAL INTEGRATED CIRCUITS
KS C 6050-1985 MEASURING METHODS FOR BIPOLAR DIGITAL INTEGRATED CIRCUITS

International Electrotechnical Commission (IEC)

IEC TR 63307:2020 Measurement methods of the complex relative permeability and permittivity of noise suppression sheet
IEC 60151-12:1966 Measurements of the electrical properties of electronic tubes. Part 12 : Methods of measuring electrode resistance, transconductance,amplification factor, conversion resistance and conversion transconductance
IEC 61196-1-125:2022
Coaxial communication cable - Part 1-125: Electrical test methods - Test for equivalent permittivity and equivalent dissipation factor of dielectric

Japanese Industrial Standards Committee (JISC)

JIS C 7041:1982 Measuring methods for bipolar digital integrated circuits
JIS C 2138:2007 Electrical insulating materials -- Methods for the determination of the relative permittivity and dielectric dissipation factor

British Standards Institution (BSI)

BS PD IEC TR 63307:2020 Measurement methods of the complex relative permeability and permittivity of noise suppression sheet
PD IEC TR 63307:2020 Measurement methods of the complex relative permeability and permittivity of noise suppression sheet
BS 7663:1993 Methods of test for determination of permittivity and dissipation factor of electrical insulating material in sheet or tubular form
BS 7663:1993(2000) Methods of test for Determination of permittivity and dissipation factor of electrical insulating material in sheet or tubular form
BS EN ISO 15351:2010 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
BS 4542:1970 Method for determination of loss tangent and permittivity of electrical insulating materials in sheet form (Lynch method)
BS 4618 Sec.2.1:1970 Recommendations for the presentation of plastics design data. Electrical properties. Permittivity

PL-PKN

PN E04410-22-1986 Electroinsulating varnishes Test methods Testing of dissipation factor and permittivity

AR-IRAM

IRAM 2057-1952 Samples of insulating materials and dielectric constants and power coefficients of electrodes

IPC - Association Connecting Electronics Industries

IPC TM-650 2.5.5.1B-1986 Permittivity (Dielectric Constant) and Loss Tangent (Dissipation Factor) of Insulating Material at 1 MHz (Contacting Electrode Systems)
IPC TM-650 2.5.5.2A-1987 Dielectric Constant and Dissipation Factor of Printed Wiring Board Material - Clip Method
IPC TM-650 2.5.5.3C-1987 Permittivity (Dielectric Constant) and Loss Tangent (Dissipation Factor) of Materials (Two Fluid Cell Method)

YU-JUS

JUS N.R1.112-1977 Electronic tubes. Measurements of the ekctrical properties. Methods of measuring electrode resistance, transconductance, amplification factor, conversion resistance and conversion transconductance

IN-BIS

IS 6262-1971 Test methods for power factor and dielectric constant of electrical insulating fluids
IS 13621-1993 Determination of dielectric constant of wood under microwave frequencies. Method of test

GSO

GSO IEC 60236:2014 Methods for the designation of electrostatic deflecting electrodes of cathode-ray tubes
GSO IEC 60151-12:2014 Measurements of the electrical properties of electronic tubes and valves - Part 12: Methods of measuring electrode resistance, transconductance, amplification factor, conversion resistance and conversion transconductance
OS GSO IEC 60151-12:2014 Measurements of the electrical properties of electronic tubes and valves - Part 12: Methods of measuring electrode resistance, transconductance, amplification factor, conversion resistance and conversion transconductance

(U.S.) Joint Electron Device Engineering Council Soild State Technology Association

JEDEC JESD5-1982 Mesurement of Temperature Coefficient of Voltage Regulator Diodes
JEDEC JESD63-1998 Standard Method for Calculating the Electromigration Model Parameters for Current Density and Temperature

RO-ASRO

STAS 12124/1-1982 Semiconductor devices BIPOLAR TRANZISTORS Methods for measuring electrical static parameters
STAS 12123/3-1983 Semiconductor devices VOLTAGE REFERENCE DIODES AND VOLTAGE REGULATOR DIODES Measuring methodes for electrical characteristics

AENOR

UNE 21322:1977 METHODS FOR THE DETERMINATION OF THE PERMITIVITY AND DIELECTRIC DISSIPATION FACTOR OF ELECTRICAL INSULATING MATERIALS AT POWER, AUDIO AND RADIO FREQUENCIES.

Standard Association of Australia （SAA）

AS 3706.9:2012 Geotextile Test Methods Determination of Dielectric Constant, Permeability and Flow Velocity
AS 3706.9:2001 Geotextiles - Methods of test - Determination of permittivity, permeability and flow rate

TR-TSE

TS 2452-1976 MEASUBEMENTS OF THE ELECTRICAL PROPERTIES OF EIJECTRONIC TUBES AND VALVES PART 12 : METHODS OF MEASURING ELECTRODE RESISTANCE, TRANSCONDUCTANE, AMPLIFICATION FACTOR, CONVERSION RESISTANCE AND CONVERSION TRANSCONDUCTANCE

European Committee for Standardization (CEN)

EN ISO 15351:2010 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method) (ISO 15351:1999)

CU-NC

NC 90-13-43-1988 Standards System for Metrological Assurance. Determination of Cunductivity Cells Constant

Institute of Interconnecting and Packaging Electronic Circuits (IPC)

IPC TM-650 2.5.5.1-1986 Permittivity (Dielectric Constant) and Loss Tangent (Dissipation Factor) of Insulating Material at 1 MHz (Contacting Electrode Systems); Revision B - May 1986

BSI

BS 68:1914 Method of specifying the resistance of steel conductor rails

Others: