| Name |
Description |
Abstract |
Status |
Publication date |
Edition |
Number of pages |
Technical committee |
ICS |
| ISO 6326-2:1981 |
Gas analysis — Determination of sulphur compounds in natural gas — Part 2: Gas chromatographic method using an electrochemical detector for the determination of odoriferous sulphur compounds |
Specifies a method for the qualitative and quantitative analysis of sulphur compounds which may occur naturally in natural gas and remain as traces after treatment, or they have been injected deliberately to allow subsequent olfactory detection. The method is applicable to: hydrogen sulphide, methanethiol and homologues up to butanethiols, and thiacyclopentane. It is not applicable for the determination of carbonyl sulphide.
|
Withdrawn |
1981-07 |
Edition : 1 |
Number of pages : 5 |
Technical Committee |
75.060
Natural gas
|
| ISO 6326-3:1989 |
Natural gas — Determination of sulfur compounds — Part 3: Determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry |
Specifies a potentiometric method for components in natural gas in the concentration range equal to or above 1 mg/m3. The gas must be free of dust, mist, oxygen, hydrogen cyanide and carbon disulfide. The method is not recommended for gases containing more than approximately 1,5 % (V/V) carbon dioxide.
|
Withdrawn |
1989-06 |
Edition : 1 |
Number of pages : 5 |
Technical Committee |
75.060
Natural gas
|
| ISO 6326-4:1994 |
Natural gas — Determination of sulfur compounds — Part 4: Gas chromatographic method using a flame photometric detector for the determination of hydrogen sulfide, carbonyl sulfide and sulfur-containing odorants |
The method specified uses a single temperature-programmed column, and a sulfur-selective flame photometric detector. It is applicable to the determination of hydrogen sulfide, carbonyl sulfide, C1 - C4 thiols and sulfides and tetrahydrothiophene, generally in the range 0,5 µmol/mol to 50 µmol/mol. It is also applicable to the quantitative determination of sulfur compounds other than hydrogen sulfide, when hydrogen sulfide is present at concentrations up to 5000 µmol/mol.
|
Withdrawn |
1994-01 |
Edition : 1 |
Number of pages : 7 |
Technical Committee |
75.060
Natural gas
|
| ISO 6326-5:1989 |
Natural gas — Determination of sulfur compounds — Part 5: Lingener combustion method |
Specifies a method for the determination of total sulphur in natural gas. It is applicable to gases with sulphur contents between 0,5 mg/m3 and 1 000 mg/m3. With a total sulphur content of more than 0,1 mg sulphur in the absorption solution, visual titration with an indicator can be chosen, whereas for lower contents turbidimetric titration is preferable.
|
Withdrawn |
1989-06 |
Edition : 1 |
Number of pages : 9 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-4:2000 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns |
|
Published |
2000-04 |
Edition : 1 |
Number of pages : 12 |
Technical Committee |
75.060
Natural gas
|
| ISO 6327:1981 |
Gas analysis — Determination of the water dew point of natural gas — Cooled surface condensation hygrometers |
Describes hygrometers which determine the water content of a gas by detecting water vapour condensation occurring on a cooled surface or by checking the stability of the condensation on this surface. The hygrometers considered here may be used for determining water vapour pressure, without requiring calibration, in a system operating under total pressures greater than or equal to atmospheric pressure.
|
Published |
1981-03 |
Edition : 1 |
Number of pages : 5 |
Technical Committee |
75.060
Natural gas
|
| ISO 6568:1981 |
Natural gas — Simple analysis by gas chromatography |
|
Withdrawn |
1981-09 |
Edition : 1 |
Number of pages : 4 |
Technical Committee |
75.060
Natural gas
|
| ISO 6569:1981 |
Natural gas — Rapid analysis by gas chromatography |
|
Withdrawn |
1981-12 |
Edition : 1 |
Number of pages : 5 |
Technical Committee |
75.060
Natural gas
|
| ISO 6570-1:1983 |
Natural gas — Determination of potential hydrocarbon liquid content — Part 1: Principles and general requirements |
|
Withdrawn |
1983-10 |
Edition : 1 |
Number of pages : 9 |
Technical Committee |
75.060
Natural gas
|
| ISO 6570-2:1984 |
Natural gas — Determination of potential hydrocarbon liquid content — Part 2: Weighing method |
|
Withdrawn |
1984-07 |
Edition : 1 |
Number of pages : 7 |
Technical Committee |
75.060
Natural gas
|
| ISO 6570-3:1984 |
Natural gas — Determination of potential hydrocarbon liquid content — Part 3: Volumetric method |
|
Withdrawn |
1984-06 |
Edition : 1 |
Number of pages : 7 |
Technical Committee |
75.060
Natural gas
|
| ISO 6570:2001 |
Natural gas — Determination of potential hydrocarbon liquid content — Gravimetric methods |
This International Standard describes the principles of, and general requirements for, two gravimetric methods for
the determination of the potential hydrocarbon liquid content of natural gas, or similar gas, at a given pressure and
temperature. Two methods are specified in this International Standard to determine the amount of condensate in a
sample gas:
_ Method A: a manual weighing method;
_ Method B: an indirect automatic weighing method based on the indication of the pressure difference caused by
the accumulation of condensate in a vertical tube.
The manual weighing method is a reference method for the indirect automatic method (Method B). The indirect
automatic method (Method B) is suitable for semi-continuous control.
NOTE Unless otherwise specified, gas volumes are in cubic metres at 273,15 K and 101,325 kPa.
|
Published |
2001-06 |
Edition : 1 |
Number of pages : 21 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-1:2000 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 1: Guidelines for tailored analysis |
|
Withdrawn |
2000-04 |
Edition : 1 |
Number of pages : 16 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-1:2012 |
Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition |
|
Published |
2012-05 |
Edition : 2 |
Number of pages : 41 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-1:2012/Cor 1:2012 |
Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition — Technical Corrigendum 1 |
|
Published |
2012-11 |
Edition : 2 |
Number of pages : 2 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-2:2001 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 2: Measuring-system characteristics and statistics for processing of data |
|
Withdrawn |
2001-02 |
Edition : 1 |
Number of pages : 24 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-2:2012 |
Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations |
This part of ISO 6974 describes the process required to determine the uncertainty associated with the mole
fraction for each component from a natural gas analysis in accordance with ISO 6974‑1.
|
Published |
2012-05 |
Edition : 2 |
Number of pages : 16 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-3:2000 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns |
|
Withdrawn |
2000-04 |
Edition : 1 |
Number of pages : 14 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-3:2018 |
Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 3: Precision and bias |
This document describes the precision that can be expected from the gas chromatographic method that is set up in accordance with ISO 6974-1. The stated precision provides values for the magnitude of variability that can be expected between test results when the method described in ISO 6974-1 is applied in one or more competent laboratories. This document also gives guidance on the assessment of bias.
|
Published |
2018-10 |
Edition : 2 |
Number of pages : 11 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-5:2000 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line process application using three columns |
|
Withdrawn |
2000-04 |
Edition : 1 |
Number of pages : 14 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-5:2014 |
Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons |
ISO 6974-5:2014 describes a gas chromatographic method for the quantitative determination of the content of nitrogen, carbon dioxide and C1 to C5 hydrocarbons individually and a composite C6+ measurement, which represents all hydrocarbons of carbon number 6 and above in natural gas samples.
|
Published |
2014-07 |
Edition : 2 |
Number of pages : 24 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-6:2002 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns |
ISO 6974-6:2002 describes a gas chromatographic method for the quantitative determination of the content of helium, hydrogen, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons in natural gas samples using three capillary columns. This method is applicable to the determination of these gases within the mole fraction ranges varying from 0,000 1 % to 40 %, depending on the component analysed, and is commonly used for laboratory applications. However, it is only applicable to methane within the mole fraction range of 40 % to 100 %. These ranges do not represent the limits of detection, but the limits within which the stated precision of the method applies. Although one or more components in a sample may not be present at detectable levels, the method can still be applicable.
ISO 6974-6:2002 is only applicable if used in conjunction with ISO 6974-1:2000 and ISO 6974-2:2001.
This method can also be applicable to the analysis of natural gas substitutes. Additional information on the applicability of this method to the determination of natural gas substitutes is also given where relevant.
|
Published |
2002-10 |
Edition : 1 |
Number of pages : 16 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974-6:2002/Cor 1:2003 |
Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns — Technical Corrigendum 1 |
|
Published |
2003-10 |
Edition : 1 |
Number of pages : 2 |
Technical Committee |
75.060
Natural gas
|
| ISO 6974:1984 |
Natural gas — Determination of hydrogen, inert gases and hydrocarbons up to C8 — Gas chromatographic method |
|
Withdrawn |
1984-10 |
Edition : 1 |
Number of pages : 14 |
Technical Committee |
75.060
Natural gas
|
| ISO 6975:1986 |
Natural gas — Determination of hydrocarbons from butane (C4) to hexadecane (C16) — Gas chromatographic method |
|
Withdrawn |
1986-06 |
Edition : 1 |
Number of pages : 9 |
Technical Committee |
75.060
Natural gas
|
| ISO 6975:1997 |
Natural gas — Extended analysis — Gas-chromatographic method |
|
Published |
1997-04 |
Edition : 2 |
Number of pages : 24 |
Technical Committee |
75.060
Natural gas
|
| ISO 6976:1983 |
Natural gas — Calculation of calorific value, density and relative density |
|
Withdrawn |
1983-12 |
Edition : 1 |
Number of pages : 14 |
Technical Committee |
75.060
Natural gas
|
| ISO 6976:1995 |
Natural gas — Calculation of calorific values, density, relative density and Wobbe index from composition |
Specifies methods for the calculation of the superior calorific value and the inferior calorific value, density, relative density and Wobbe index of dry natural gas and other combustible gaseous fuels, when the composition of the gas by mole fraction is known. Replaces the first edition, which has been technically revised.
|
Withdrawn |
1995-11 |
Edition : 2 |
Number of pages : 46 |
Technical Committee |
75.060
Natural gas
|
| ISO 6976:1995/Cor 1:1997 |
Natural gas — Calculation of calorific values, density, relative density and Wobbe index from composition — Technical Corrigendum 1: (Applies to French version only) |
|
Withdrawn |
1997-05 |
Edition : 2 |
|
Technical Committee |
75.060
Natural gas
|
| ISO 6976:1995/Cor 2:1997 |
Natural gas — Calculation of calorific values, density, relative density and Wobbe index from composition — Technical Corrigendum 2 |
|
Withdrawn |
1997-12 |
Edition : 2 |
Number of pages : 1 |
Technical Committee |
75.060
Natural gas
|
| ISO 6976:1995/Cor 3:1999 |
Natural gas — Calculation of calorific values, density, relative density and Wobbe index from composition — Technical Corrigendum 3 |
|
Withdrawn |
1999-09 |
Edition : 2 |
Number of pages : 1 |
Technical Committee |
75.060
Natural gas
|
| ISO 6976:2016 |
Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
ISO 6976:2016 specifies methods for the calculation of gross calorific value, net calorific value, density, relative density, gross Wobbe index and net Wobbe index of natural gases, natural gas substitutes and other combustible gaseous fuels, when the composition of the gas by mole fraction is known. The methods specified provide the means of calculating the properties of the gas mixture at commonly used reference conditions.
Mole fractions by definition sum to unity. Guidance on the achievement of this requirement by chromatographic analysis is available in ISO 6974‑1 and ISO 6974‑2.
The methods of calculation require values for various physical properties of the pure components; these values, together with associated uncertainties, are provided in tables and their sources are identified.
Methods are given for estimating the standard uncertainties of calculated properties.
The methods of calculation of the values of properties on either a molar, mass or volume basis are applicable to any natural gas, natural gas substitute or other combustible fuel that is normally gaseous, except that for properties on the volume basis the method is restricted to mixtures for which the compression factor at reference conditions is greater than 0,9.
Example calculations are given in Annex D for the recommended methods of calculation.
NOTE 1 The qualifiers "superior", "higher", "upper" and "total" are, for the purposes of this document, synonymous with "gross"; likewise, "inferior" and "lower" are synonymous with "net". The term "heating value" is synonymous with "calorific value"; "mass density" and "specific density" are synonymous with "density"; "specific gravity" is synonymous with "relative density"; "Wobbe number" is synonymous with "Wobbe index"; "compressibility factor" is synonymous with "compression factor". The dimensionless quantity molecular weight is numerically equal to the molar mass in kg·kmol−1.
NOTE 2 There are no explicit limits of composition to which the methods described in this document are applicable. However, the restriction of volume-basis calculations to mixtures with a compression factor greater than 0,9 at reference conditions sets implicit limits on composition.
NOTE 3 Because the mole fraction of any water present is not normally available from chromatographic analysis, it is common practice to calculate the physical properties on a dry gas basis and to allow for the effects of water vapour in a separate procedure. However, if the mole fraction of water vapour is known then the property calculations can be carried out completely in accordance with the procedures described herein. The effects of water vapour on calorific value, whether the latter is directly measured or calculated, are discussed in ISO/TR 29922.
NOTE 4 For aliphatic hydrocarbons of carbon number 7 or above, any isomer present is included with the normal isomer of the same carbon number.
NOTE 5 If the user's requirement includes the replacement of, for example, a C6+ or C7+ grouping of analytically unresolved components by a single pseudo-component, then it is the user's own task to set the mole fraction composition, and hence properties, of this pseudo-component so as to be fit for purpose in the particular application. Any so-called "spectator water" and "non-combustible hydrogen sulfide" are treated as pseudo-components by setting the appropriate enthalpy of combustion values to zero.
|
Published |
2016-08 |
Edition : 3 |
Number of pages : 57 |
Technical Committee |
75.060
Natural gas
|
| ISO 6978-1:2003 |
Natural gas — Determination of mercury — Part 1: Sampling of mercury by chemisorption on iodine |
ISO 6978-1:2003 specifies a method for the determination of total mercury content in natural gas using a sampling method at pressures up to 40 MPa by chemisorption on iodine impregnated silica gel. This sampling method is suitable for the determination of mercury contents within the range of 0,1 microgram/m3 to 5 000 micrograms/m3 in natural gas. This method is applicable to sampled gas volumes containing less than 20 mg hydrogen sulfide and less than a total liquid hydrocarbon condensate of 10 g/m3 under the sampling conditions. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.
|
Published |
2003-10 |
Edition : 1 |
Number of pages : 16 |
Technical Committee |
75.060
Natural gas
|
| ISO 6978-2:2003 |
Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy |
This ISO 6978-2:2003 specifies a method for the determination of total mercury content of pipeline quality natural gas using a sampling method by amalgamation on gold/platinum (Au/Pt) alloy thread. This method is applicable to the sampling of raw natural gas when no condensation is present. At atmospheric pressure, this method is suitable for the determination of mercury content within the range of 0,01 microgram /m3 to 100 micrograms/m3 in natural gas samples. At higher pressures (up to 8 MPa), this sampling method is suitable for the determination of mercury contents within the range of 0,001 microgram/m3 to 1 microgram/m3. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.
|
Published |
2003-10 |
Edition : 1 |
Number of pages : 17 |
Technical Committee |
75.060
Natural gas
|
| ISO 6978-2:2003/Cor 1:2004 |
Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy — Technical Corrigendum 1 |
|
Withdrawn |
2004-12 |
Edition : 1 |
Number of pages : 1 |
Technical Committee |
75.060
Natural gas
|
| ISO 6978-2:2003/Cor 2:2006 |
Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy — Technical Corrigendum 2 |
|
Published |
2006-04 |
Edition : 1 |
Number of pages : 1 |
Technical Committee |
75.060
Natural gas
|
| ISO 6978:1992 |
Natural gas — Determination of mercury |
Two methods are specified: method A for higher mercury content (> 0,5 µg/m^3) based on sampling at atmospheric pressure, absorption in potassium permangante solution, reduction of mercury ions, analysis by flameless atomic absorption spectrometry; method B for lower mercury content (10^- 3 µg/m^3 to 1 µg/m^3) based on sampling at atmospheric or higher pressure, adsorption on silver/gold, desorption, analysis by flameless atomic absorption spectrometry.
|
Withdrawn |
1992-08 |
Edition : 1 |
Number of pages : 11 |
Technical Committee |
75.060
Natural gas
|
| ISO/DIS 7055 |
Natural gas — Upstream area — Determination of drag reduction in laboratory for slick water |
This document specifies the applicable scope, test principles, calculation formula, equipment requirements, reagent materials, test methods, repeatability requirements, and other aspects for the drag reduction performance of slick water. It is applicable to the evaluation of drag reduction performance of fracturing fluid, acid fluid and other reservoir reconstruction fluids. The test tube should be smooth in inner wall and be straight or of uniform curve when the experiment is conducted. The two pressure measuring points of the differential pressure sensor should be as far as possible. The experiment tests the pressure difference between the fresh water and the liquid added with the drag reducing agent.
|
Under development |
|
Edition : 1 |
Number of pages : 5 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 7262:2022 |
Natural gas — Coalbed methane quality designation and the applicability of ISO/TC 193 current standards |
This document surveys the quality designation of CBM all around the world, and analyses whether ISO/TC 193 standards for sampling, test and calculation methods are applicable to CBM.
|
Published |
2022-01 |
Edition : 1 |
Number of pages : 20 |
Technical Committee |
75.060
Natural gas
|
| ISO 8943:1991 |
Refrigerated light hydrocarbon fluids — Sampling of liquefied natural gas — Continuous method |
Describes the sampling system, the apparatus, the sampling procedure, and the contents of the sampling report. Gives precautions. Specifies 15 terms and definitions. Annex A is for information only.
|
Withdrawn |
1991-11 |
Edition : 1 |
Number of pages : 11 |
Technical Committee |
75.060
Natural gas
|
| ISO 8943:2007 |
Refrigerated light hydrocarbon fluids — Sampling of liquefied natural gas — Continuous and intermittent methods |
ISO 8943:2007 specifies methods for the continuous and the intermittent sampling of LNG while it is being transferred through an LNG transfer line.
|
Published |
2007-03 |
Edition : 2 |
Number of pages : 20 |
Technical Committee |
75.060
Natural gas
|
| ISO/CD 8943 |
Refrigerated light hydrocarbon fluids — Sampling of liquefied natural gas — Continuous and intermittent methods |
ISO 8943:2007 specifies methods for the continuous and the intermittent sampling of LNG while it is being transferred through an LNG transfer line.
|
Under development |
|
Edition : 3 |
|
Technical Committee |
75.060
Natural gas
|
| ISO 2592:2000 |
Determination of flash and fire points — Cleveland open cup method |
|
Withdrawn |
2000-09 |
Edition : 2 |
Number of pages : 14 |
Technical Committee |
75.080
Petroleum products in general
|
| ISO 10101-1:1993 |
Natural gas — Determination of water by the Karl Fischer method — Part 1: Introduction |
Specifies general requirements for the determination. The principle of the method is reaction of water present in the test sample with iodine and sulfur-dioxide in a pyridine/methanol mixture (Karl Fischer reagent). ISO 10101-2 and ISO 10101-3 specify two individual methods of determination.
|
Withdrawn |
1993-10 |
Edition : 1 |
Number of pages : 3 |
Technical Committee |
75.060
Natural gas
|
| ISO 10101-1:2022 |
Natural gas — Determination of water by the Karl Fischer method — Part 1: General requirements |
This document specifies general requirements for the determination of water in natural gas using the Karl Fischer method (see Reference [1]).
ISO 10101-2 and ISO 10101-3 specify two individual methods of determination, a titration procedure and a coulometric procedure, respectively.
|
Published |
2022-08 |
Edition : 2 |
Number of pages : 4 |
Technical Committee |
75.060
Natural gas
|
| ISO 10101-2:1993 |
Natural gas — Determination of water by the Karl Fischer method — Part 2: Titration procedure |
The principle of the method specified is passing a measured volume of gas through a cell containing a relatively small volume of absorbent solution. Water in the gas is extracted by the absorbent solution and subsequently titrated with Karl Fischer reagent. The design of the cell and the absorbent solution are chosen so as to ensure efficient collection of the water at the high flowrates necessary. Is applicable to water concentrations between 5 mg/cm^3 and 5000 mg/cm^3.
|
Withdrawn |
1993-10 |
Edition : 1 |
Number of pages : 7 |
Technical Committee |
75.060
Natural gas
|
| ISO 10101-2:2022 |
Natural gas — Determination of water by the Karl Fischer method — Part 2: Volumetric procedure |
This document specifies a volumetric procedure for the determination of water content in natural gas. Volumes are expressed in cubic metres at a temperature of 273,15 K (0 °C) and a pressure of 101,325 kPa (1 atm). It applies to water concentrations between 5 mg/m3 and 5 000 mg/m3.
|
Published |
2022-08 |
Edition : 2 |
Number of pages : 11 |
Technical Committee |
75.060
Natural gas
|
| ISO 10101-3:1993 |
Natural gas — Determination of water by the Karl Fischer method — Part 3: Coulometric procedure |
The principle of the method specified is passing a measured volume of gas through the titration cell, where the water is absorbed by the anodic solution. The iodine required for the determination of water by the Karl Fischer reaction is generated coulometrically from iodide. The quantity of electricity is directly proportional to the mass of iodine generated and hence to the mass of water determined. Applies to natural gas and other gases which do not react with Karl Fischer reagents. Is applicable to water concentrations between 5 mg/cm^3 and 5000 mg/cm^3.
|
Withdrawn |
1993-10 |
Edition : 1 |
Number of pages : 6 |
Technical Committee |
75.060
Natural gas
|
| ISO 10101-3:2022 |
Natural gas — Determination of water by the Karl Fischer method — Part 3: Coulometric procedure |
This document specifies a coulometric procedure for the determination of water content by the Karl Fischer method. The method is applicable to natural gas and other gases which do not react with Karl Fischer (KF) reagents.
It applies to water concentrations between 5 mg/m3 and 5 000 mg/m3. Volumes are expressed at temperature of 273,15 K (0 °C) and a pressure of 101,325 kPa (1 atm).
|
Published |
2022-08 |
Edition : 2 |
Number of pages : 9 |
Technical Committee |
75.060
Natural gas
|
| ISO 10715:1997 |
Natural gas — Sampling guidelines |
|
Withdrawn |
1997-06 |
Edition : 1 |
Number of pages : 39 |
Technical Committee |
75.060
Natural gas
|
| ISO 10715:2022 |
Natural gas — Gas sampling |
This document gives means for ensuring that samples of natural gas and natural gas substitutes that are conveyed into transmission and distribution grids are representative of the mass to which they are allocated.
NOTE To ensure that a particular gas is taken into account in the standard, please see Annex A.
This document is applicable for sampling at sites and locations where interchangeability criteria, energy content and network entry conditions are measured and monitored and is particularly relevant at cross border and fiscal measurement stations. It serves as an important source for control applications in natural gas processing and the measurement of trace components.
This document is applicable to natural dry gas (single phase - typically gas transiting through natural gas pipelines) sampling only. On occasion a natural gas flow can have entrained liquid hydrocarbons. Attempting to sample a wet natural gas flow introduces the possibility of extra unspecified uncertainties in the resulting flow composition analysis. Sampling a wet gas (two or three phases) flow is outside the scope of this document.
This document does not apply to the safety issues associated with gas sampling.
|
Published |
2022-10 |
Edition : 2 |
Number of pages : 70 |
Technical Committee |
75.060
Natural gas
|
| ISO 10723:1995 |
Natural gas — Performance evaluation for on-line analytical systems |
Describes a method of assessing whether an analytical system for natural gas is satisfactory provided that the analytical requirements have been clearly defined and the analytical and calibration procedures have been fully described.
|
Withdrawn |
1995-12 |
Edition : 1 |
Number of pages : 43 |
Technical Committee |
75.060
Natural gas
|
| ISO 10723:1995/Cor 1:1998 |
Natural gas — Performance evaluation for on-line analytical systems — Technical Corrigendum 1 |
|
Withdrawn |
1998-07 |
Edition : 1 |
Number of pages : 2 |
Technical Committee |
75.060
Natural gas
|
| ISO 10723:2012 |
Natural gas — Performance evaluation for analytical systems |
ISO 10723:2012 specifies a method of determining whether an analytical system for natural gas analysis is fit for purpose. It can be used either to determine a range of gas compositions to which the method can be applied, using a specified calibration gas, while satisfying previously defined criteria for the maximum errors and uncertainties on the composition or property or both, or to evaluate the range of errors and uncertainties on the composition or property (calculable from composition) or both when analysing gases within a defined range of composition, using a specified calibration gas.
|
Published |
2012-12 |
Edition : 2 |
Number of pages : 32 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 11150:2007 |
Natural gas - Hydrocarbon dew point and hydrocarbon content |
ISO/TR 11150:2007 describes the various means of estimating hydrocarbon dew point and hydrocarbon content of natural gas.
|
Published |
2007-12 |
Edition : 1 |
Number of pages : 19 |
Technical Committee |
75.060
Natural gas
|
| ISO 11541:1997 |
Natural gas — Determination of water content at high pressure |
Describes a method of determining the water content of natural gas under pressure of more than 1 MPa. Also applicable to natural gas, containing hydrogen sulfide with a water concentration of 10 mg/m^3 or more.
|
Published |
1997-02 |
Edition : 1 |
Number of pages : 8 |
Technical Committee |
75.060
Natural gas
|
| ISO/DIS 11626 |
Natural gas- Determination of sulfur compounds- Determination of hydrogen sulfide content by UV absorption method |
This document specifies a online/offline ultraviolet absorption method for the determination of hydrogen sulphide of natural gas, in the range from 1 mg/m3 to 100 mg/m3.
|
Under development |
|
Edition : 1 |
Number of pages : 9 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 12148:2009 |
Natural gas — Calibration of chilled mirror type instruments for hydrocarbon dewpoint (liquid formation) |
ISO/TR 12148:2009 describes the principles of, and general requirements for, the traceable calibration of automatic hydrocarbon-dew-point chilled-mirror instruments using the indirect automatic weighing method (method B) described in ISO 6570:2001 to determine the potential hydrocarbon liquid content of natural gas, or similar gas. The calibration procedure is intended for use by chilled-mirror instruments in downstream applications transferring processed natural gas.
If the gas composition is constant, the manual weighing method (method A) described in ISO 6570:2001 is also applicable.
The application of this calibration procedure in the upstream area is not excluded a priori, however, currently there is no experience using this procedure in an upstream environment.
The usability of data on the potential hydrocarbon liquid content of natural gas for verification, adjustment or calibration of hydrocarbon-dew-point chilled-mirror instruments is based on the condensation behaviour of natural gases. ISO/TR 12148:2009 provides information on the condensation behaviour of natural gases and the various measuring techniques to determine properties, like hydrocarbon dew point and potential hydrocarbon liquid content, related to the condensation behaviour of natural gases.
|
Published |
2009-02 |
Edition : 1 |
Number of pages : 31 |
Technical Committee |
75.060
Natural gas
|
| ISO 12213-1:1997 |
Natural gas — Calculation of compression factor — Part 1: Introduction and guidelines |
|
Withdrawn |
1997-11 |
Edition : 1 |
Number of pages : 12 |
Technical Committee |
75.060
Natural gas
|
| ISO 12213-1:2006 |
Natural gas — Calculation of compression factor — Part 1: Introduction and guidelines |
ISO 12213 specifies methods for the calculation of compression factors of natural gases, natural gases containing a synthetic admixture and similar mixtures at conditions under which the mixture can exist only as a gas.
It is divided into three parts: this part, ISO 12213-1:2006, gives an introduction and provides guidelines for the methods of calculation described in Parts 2 and 3.
|
Published |
2006-11 |
Edition : 2 |
Number of pages : 13 |
Technical Committee |
75.060
Natural gas
|
| ISO 12213-2:1997 |
Natural gas — Calculation of compression factor — Part 2: Calculation using molar-composition analysis |
|
Withdrawn |
1997-11 |
Edition : 1 |
Number of pages : 28 |
Technical Committee |
75.060
Natural gas
|
| ISO 12213-2:2006 |
Natural gas — Calculation of compression factor — Part 2: Calculation using molar-composition analysis |
ISO 12213 specifies methods for the calculation of compression factors of natural gases, natural gases containing a synthetic admixture and similar mixtures at conditions under which the mixture can exist only as a gas.
It is divided into three parts: this part, ISO 12213-2:2006, specifies a method for the calculation of compression factors when the detailed composition of the gas by mole fractions is known, together with the relevant pressures and temperatures.
The method is applicable to pipeline quality gases within the ranges of pressure p and temperature T at which transmission and distribution operations normally take place, with an uncertainty of about +/- 0,1 %. It can be applied, with greater uncertainty, to wider ranges of gas composition, pressure and temperature.
|
Published |
2006-11 |
Edition : 2 |
Number of pages : 32 |
Technical Committee |
75.060
Natural gas
|
| ISO 12213-3:1997 |
Natural gas — Calculation of compression factor — Part 3: Calculation using physical properties |
|
Withdrawn |
1997-11 |
Edition : 1 |
Number of pages : 30 |
Technical Committee |
75.060
Natural gas
|
| ISO 12213-3:2006 |
Natural gas — Calculation of compression factor — Part 3: Calculation using physical properties |
ISO 12213 specifies methods for the calculation of compression factors of natural gases, natural gases containing a synthetic admixture and similar mixtures at conditions under which the mixture can exist only as a gas.
It is divided into three parts: this part, ISO 12213-3:2006, specifies a method for the calculation of compression factors when the superior calorific value, relative density and carbon dioxide content are known, together with the relevant pressures and temperatures. If hydrogen is present, as is often the case for gases with a synthetic admixture, the hydrogen content also needs to be known.
The method is primarily applicable to pipeline quality gases within the ranges of pressure p and temperature T at which transmission and distribution operations normally take place, with an uncertainty of about +/-0,1 %. For wider-ranging applications the uncertainty of the results increases.
|
Published |
2006-11 |
Edition : 2 |
Number of pages : 38 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 12748:2015 |
Natural Gas — Wet gas flow measurement in natural gas operations |
ISO/TR 12748:2015 describes production flow measurement of wet natural gas streams with WGFMs in surface and subsea facilities. Wet natural gas streams are gas-dominated flows with liquids like water and/or hydrocarbon liquids. ISO/TR 12748:2015 defines terms/symbols, explains the various concepts, and describes best practices of wet gas flow meter design and operation. It addresses metering techniques, testing, installation, commissioning, and operation practices such as maintenance, calibration, and verification. It also provides a theoretical background of this comprehensive, challenging and still evolving measurement technology.
|
Published |
2015-10 |
Edition : 1 |
Number of pages : 92 |
Technical Committee |
75.060
Natural gas
;
75.180.30
Volumetric equipment and measurements
|
| ISO 13443:1996 |
Natural gas — Standard reference conditions |
Specifies the standard reference conditions of temperature, pressure and humidity to be used for measurements and calculations carried out on natural gases and similar fluids.
|
Published |
1996-12 |
Edition : 1 |
Number of pages : 11 |
Technical Committee |
75.060
Natural gas
|
| ISO 13443:1996/Cor 1:1997 |
Natural gas — Standard reference conditions — Technical Corrigendum 1 |
|
Published |
1997-12 |
Edition : 1 |
|
Technical Committee |
75.060
Natural gas
|
| ISO 13686:1998 |
Natural gas — Quality designation |
|
Withdrawn |
1998-04 |
Edition : 1 |
Number of pages : 48 |
Technical Committee |
75.060
Natural gas
|
| ISO 13686:2013 |
Natural gas — Quality designation |
ISO 13686:2013 specifies the parameters required to describe finally processed and, where required, blended natural gas.
The main text of ISO 13686:2013 contains a list of these parameters, their units and references to measurement standards. Informative annexes give examples of typical values for these parameters, with the main emphasis on health and safety.
|
Published |
2013-06 |
Edition : 2 |
Number of pages : 48 |
Technical Committee |
75.060
Natural gas
|
| ISO 13734:1998 |
Natural gas — Organic sulfur compounds used as odorants — Requirements and test methods |
La présente norme spécifie les exigences et les méthodes d'essai applicables aux composés organiques soufrés, désignés ci-après comme odorisants, utilisés pour l'odorisation du gaz naturel et de ses substituts pour les réseaux publics d'alimentation en gaz.
|
Withdrawn |
1998-06 |
Edition : 1 |
Number of pages : 6 |
Technical Committee |
75.060
Natural gas
|
| ISO 13734:1998/Cor 1:1999 |
Natural gas — Organic sulfur compounds used as odorants — Requirements and test methods — Technical Corrigendum 1 |
|
Withdrawn |
1999-07 |
Edition : 1 |
Number of pages : 2 |
Technical Committee |
75.060
Natural gas
|
| ISO 13734:2013 |
Natural gas — Organic components used as odorants — Requirements and test methods |
ISO 13734;2013 specifies requirements and test methods for organic compounds suitable for odorization of natural gas and natural gas substitutes for public gas supply, hereafter referred to as odorants.
|
Published |
2013-11 |
Edition : 2 |
Number of pages : 10 |
Technical Committee |
75.060
Natural gas
|
| ISO/WD 13734 |
Natural gas — Organic components used as odorants — Requirements and test methods |
|
Deleted |
|
Edition : 3 |
|
Technical Committee |
75.060
Natural gas
|
| ISO 14111:1997 |
Natural gas — Guidelines to traceability in analysis |
|
Published |
1997-03 |
Edition : 1 |
Number of pages : 28 |
Technical Committee |
75.060
Natural gas
|
| ISO 14532:2001 |
Natural gas — Vocabulary |
|
Withdrawn |
2001-08 |
Edition : 1 |
Number of pages : 68 |
Technical Committee |
75.060
Natural gas
;
01.040.75
Petroleum and related technologies (Vocabularies)
|
| ISO 14532:2001/Cor 1:2002 |
Natural gas — Vocabulary — Technical Corrigendum 1 |
|
Withdrawn |
2002-05 |
Edition : 1 |
Number of pages : 1 |
Technical Committee |
75.060
Natural gas
;
01.040.75
Petroleum and related technologies (Vocabularies)
|
| ISO 14532:2014 |
Natural gas — Vocabulary |
ISO 14532:2014 establishes the terms, definitions, symbols, and abbreviations used in the field of natural gas.
The terms and definitions have been reviewed and studied in order to cover all aspects of any particular term with input from other sources such as European Standards from CEN (The European Committee for Standardization), national standards, and existing definitions in the IGU Dictionary of the Gas Industry.
The definitive intention of ISO 14532:2014 is to incorporate the reviewed definitions into the ISO/TC 193 source standards.
|
Published |
2014-06 |
Edition : 2 |
Number of pages : 37 |
Technical Committee |
75.060
Natural gas
;
01.040.75
Petroleum and related technologies (Vocabularies)
|
| ISO/TR 14749:2016 |
Natural gas — Online gas chromatograph for upstream area |
ISO/TS 14749:2016 concerns the determination of hydrocarbon components up to C7+ in natural gas in upstream petroleum industry, which describes the principle of operation of GC and provides guidelines for selection, evaluation, and factors impacting upon its performance such as sample probe, sample conditioning, installation, operation and troubleshooting.
|
Published |
2016-05 |
Edition : 1 |
Number of pages : 19 |
Technical Committee |
75.060
Natural gas
|
| ISO 15112:2007 |
Natural gas — Energy determination |
ISO 15112:2007 provides the means for the energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given.
Only systems currently in use are described.
NOTE Use of such systems in commercial or official trade can require approval of national authorization agencies and compliance with legal regulations is required.
ISO 15112:2007 applies to any gas-measuring station from domestic to very large, high-pressure transmission.
New techniques are not excluded provided their proven performance is equivalent to, or better than, that of those techniques referred to in ISO 15112:2007.
Gas-measuring systems are not the subject of ISO 15112:2007.
|
Withdrawn |
2007-12 |
Edition : 1 |
Number of pages : 62 |
Technical Committee |
75.060
Natural gas
|
| ISO 15112:2011 |
Natural gas — Energy determination |
ISO 15112:2011 provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given.
Only systems currently in use are described.
ISO 15112:2011 applies to any gas-measuring station from domestic to very large high-pressure transmission.
New techniques are not excluded, provided their proven performance is equivalent to, or better than, that of those techniques referred to in ISO 15112:2011.
Gas-measuring systems are not the subject of ISO 15112:2011.
|
Withdrawn |
2011-07 |
Edition : 2 |
Number of pages : 63 |
Technical Committee |
75.060
Natural gas
|
| ISO 15112:2018 |
Natural gas — Energy determination |
This document provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given.
Only systems currently in use are described.
NOTE Use of such systems in commercial or official trade can require the approval of national authorization agencies, and compliance with legal regulations is required.
This document applies to any gas-measuring station from domestic to very large high-pressure transmission.
New techniques are not excluded, provided their proven performance is equivalent to, or better than, that of those techniques referred to in this document.
Gas-measuring systems are not the subject of this document.
|
Published |
2018-11 |
Edition : 3 |
Number of pages : 71 |
Technical Committee |
75.060
Natural gas
|
| ISO 15403-1:2006 |
Natural gas — Natural gas for use as a compressed fuel for vehicles — Part 1: Designation of the quality |
The aim of ISO 15403-1:2006 is to provide manufacturers, vehicle operators, fuelling station operators and others involved in the compressed-natural-gas vehicle industry with information on the fuel quality for natural gas vehicles (NGVs) required to develop and operate compressed-natural-gas vehicle equipment successfully.
Fuel meeting the requirements of ISO 15403-1:2006 should provide for the safe operation of the vehicle and associated equipment needed for its fuelling and maintenance, protect the fuel system from the detrimental effects of corrosion, poisoning, and liquid or solid deposition and provide satisfactory vehicle performance under any and all conditions of climate and driving demands.
Some aspects of ISO 15403-1:2006 may also be applicable for the use of natural gas in stationary combustion engines.
|
Published |
2006-10 |
Edition : 1 |
Number of pages : 24 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 15403-2:2006 |
Natural gas - Natural gas for use as a compressed fuel for vehicles — Part 2: Specification of the quality |
ISO/TR 15403-2:2006 addresses the specifications of natural gas as a compressed fuel for vehicles as an addendum to ISO 15403-1. Specifically, ISO/TR 15403-2:2006 is intended to satisfy requests for quantitative data.
The critical items regarding gas composition are water content, sulfur compounds, particulate matter, higher hydrocarbons, CO2, free oxygen, glycol/methanol, oil content and corrosive components.
ISO/TR 15403-2:2006 pertains only to compressed natural gas as it enters the fuel containers on the vehicle. It does not apply to the natural gas delivered to a refuelling station.
|
Withdrawn |
2006-08 |
Edition : 1 |
Number of pages : 6 |
Technical Committee |
75.060
Natural gas
|
| ISO 15970:2008 |
Natural gas — Measurement of properties — Volumetric properties: density, pressure, temperature and compression factor |
ISO 15970:2008 gives requirements and procedures for the measurement of the properties of natural gas that are used mainly for volume calculation and volume conversion: density at reference and at operating conditions, pressure, temperature and compression factor.
Only those methods and instruments are considered that are suitable for field operation under the conditions of natural gas transmission and distribution, installed either in-line or on-line, and that do not involve the determination of the gas composition.
ISO 15970:2008 gives examples for currently used instruments that are available commercially and of interest to the natural gas industry.
The density at reference conditions (sometimes referred to as normal, standard or even base density) is required for conversion of volume data and can be used for other physical properties.
Density at operating conditions is measured for mass-flow measurement and volume conversion using the observed line density and can be used for other physical properties. ISO 15970:2008 covers density transducers based on vibrating elements, normally suitable for measuring ranges of 5 kg/m3 to 250 kg/m3.
Pressure measurement deals with differential, gauge and absolute pressure transmitters. It considers both analogue and smart transmitters (i.e. microprocessor based instruments) and, if not specified otherwise, the corresponding paragraphs refer to differential, absolute and gauge pressure transmitters without distinction.
Temperature measurements in natural gas are performed within the range of conditions under which transmission and distribution are normally carried out (253 K < T < 338 K). In this field of application, resistance thermometer detectors (RTD) are generally used.
The compression factor (also known as the compressibility factor or the real gas factor and given the symbol Z) appears, in particular, in equations governing volumetric metering. Moreover, the conversion of volume at metering conditions to volume at defined reference conditions can properly proceed with an accurate knowledge of Z at both relevant pressure and relevant temperature conditions.
|
Published |
2008-06 |
Edition : 1 |
Number of pages : 47 |
Technical Committee |
75.060
Natural gas
;
75.180.30
Volumetric equipment and measurements
|
| ISO 15971:2008 |
Natural gas — Measurement of properties — Calorific value and Wobbe index |
ISO 15971:2008 concerns the measurement of calorific value of natural gas and natural gas substitutes by non‑separative methods, i.e. methods that do not involve the determination of the gas composition, nor calculations from it. ISO 15971:2008 describes the principles of operation of a variety of instruments in use for this purpose, and provides guidelines for the selection, evaluation, performance assessment, installation and operation of these.
Calorific values can be expressed on a mass basis, a molar basis or, more commonly, a volume basis. The working range for superior calorific value of natural gas, on the volume basis, is usually between 30 MJ/m3 and 45 MJ/m3 at standard reference conditions (see ISO 13443). The corresponding range for the Wobbe index is usually between 40 MJ/m3 and 60 MJ/m3.
ISO 15971:2008 neither endorses nor disputes the claims of any commercial manufacturer for the performance of an instrument. Its central thesis is that fitness-for-purpose in any particular application (defined in terms of a set of specific operational requirements) can be assessed only by means of a well-designed programme of experimental tests. Guidelines are provided for the proper content of these tests.
|
Published |
2008-12 |
Edition : 1 |
Number of pages : 50 |
Technical Committee |
75.060
Natural gas
|
| ISO/TS 16922:2022 |
Natural gas — Odorization |
This document gives the specifications and guidelines for the methods to be used in the odorization of natural gas and other methane rich gases delivered through natural gas networks to gas applications under a safety point of view.
This document also specifies the principles for the odorization technique (including handling and storage of odorants) and the control of odorization of natural gas and other methane rich gases.
NOTE The general requirements for odorants, and the physical and chemical properties of commonly used odorants are specified in ISO 13734.
|
Published |
2022-09 |
Edition : 1 |
Number of pages : 12 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 16922:2013 |
Natural gas — Odorization |
ISO/TR 16922 gives the specifications and guidelines for the methods to be used in the odorization of natural gas under a safety point of view.
ISO/TR 16922 also specifies the principles for the odorization technique (including handling and storage of odorants) and the control of odorization of natural gas.
ISO/TR 16922 does not cover odorization of gas supply with gases other than natural gas.
NOTE The general requirements for odorants, and the physical and chemical properties of commonly used odorants are specified in ISO 13734.
|
Withdrawn |
2013-11 |
Edition : 1 |
Number of pages : 10 |
Technical Committee |
75.060
Natural gas
|
| ISO/TS 16922:2002 |
Natural gas — Guidelines for odorizing gases |
ISO/TS 16922 gives the guidelines for the methods and odorants to be used in the odorization of natural gas.
ISO/TS 16922 also specifies the general requirements for odorants, the physical and chemical properties of commonly used sulfur-containing odorants, the principles for the determination of odour intensity, the odorization technique (including handling and storage of odorants) and the control of odorization of natural gas.
|
Withdrawn |
2002-06 |
Edition : 1 |
Number of pages : 12 |
Technical Committee |
75.060
Natural gas
|
| ISO 16960:2014 |
Natural gas — Determination of sulfur compounds — Determination of total sulfur by oxidative microcoulometry method |
ISO 16960:2014 specifies a method for the determination of total sulfur in the range from 1 mg/m3 to 200 mg/m3 in pipeline natural gas by oxidative microcoulometry. Natural gas with sulfur contents above 200 mg/m3 can be analysed after dilution with a suitable sulfur-free solvent.
|
Published |
2014-10 |
Edition : 1 |
Number of pages : 7 |
Technical Committee |
75.060
Natural gas
|
| ISO/DTR 17910 |
Natural gas - Coal-based synthetic natural gas quality designation and the applicability of ISO/TC 193 standards |
|
Under development |
|
Edition : 1 |
|
Technical Committee |
75.060
Natural gas
|
| ISO/CD TS 18222 |
Natural gas — Olfactory method for the evaluation of odour intensity |
This document describes how to establish the correlation between odorant concentration in air and odour intensity, usually presented in the form of odour intensity curves, following the odour intensity scale presented in Clause 5.
This document does not fix a required level of odour intensity in the natural gas: this prescription is specified by local/national regulation.
|
Under development |
|
Edition : 1 |
|
Technical Committee |
75.060
Natural gas
|
| ISO 18453:2004 |
Natural gas — Correlation between water content and water dew point |
ISO 18453:2004 specifies a method to provide users with a reliable mathematical relationship between water content and water dew point in natural gas when one of the two is known. The calculation method, developed by GERG; is applicable to both the calculation of the water content and the water dew point.
ISO 18453:2004 gives the uncertainty for the correlation but makes no attempt to quantify the measurement uncertainties.
|
Published |
2004-07 |
Edition : 1 |
Number of pages : 23 |
Technical Committee |
75.060
Natural gas
|
| ISO 19739:2004 |
Natural gas — Determination of sulfur compounds using gas chromatography |
ISO 19739:2004 specifies the determination of hydrogen sulfide, carbonyl sulfide, C1 to C4 thiols, sulfides and tetrahydrothiophene (THT) using gas chromatography (GC). Depending on the method chosen from those given in its annexes, the application ranges for the determination of sulfur compounds can vary, but whichever of the methods is used, its requirements apply.
|
Published |
2004-05 |
Edition : 1 |
Number of pages : 55 |
Technical Committee |
75.060
Natural gas
|
| ISO 19739:2004/Cor 1:2009 |
Natural gas — Determination of sulfur compounds using gas chromatography — Technical Corrigendum 1 |
|
Published |
2009-04 |
Edition : 1 |
Number of pages : 1 |
Technical Committee |
75.060
Natural gas
|
| ISO 20676:2018 |
Natural gas — Upstream area — Determination of hydrogen sulfide content by laser absorption spectroscopy |
This document specifies a method for the determination of hydrogen sulfide content in working field natural gas of upstream area by laser absorption spectroscopy. The analytical range expressed as mole fraction is 10 × 10−6 to 20 %. The analytical range can be expanded to higher content with specific instrument requirements.
|
Published |
2018-10 |
Edition : 1 |
Number of pages : 16 |
Technical Committee |
75.060
Natural gas
|
| ISO 20729:2017 |
Natural gas — Determination of sulfur compounds — Determination of total sulfur content by ultraviolet fluorescence method |
ISO 20729:2017 applies to the determination of total sulfur content in natural gas expressed as sulfur mass concentration ranging from 1 mg/m3 to 200 mg/m3. Natural gas with sulfur contents above 200 mg/m3 can be analysed after dilution with a suitable sulfur-free solvent.
|
Published |
2017-10 |
Edition : 1 |
Number of pages : 10 |
Technical Committee |
75.060
Natural gas
|
| ISO 20765-1:2005 |
Natural gas — Calculation of thermodynamic properties — Part 1: Gas phase properties for transmission and distribution applications |
This part of ISO 20765 specifies a method of calculation for the volumetric and caloric properties of natural gases, natural gases containing synthetic admixture and similar mixtures, at conditions where the mixture can exist only as a gas.
The method is applicable to pipeline-quality gases within the ranges of pressure and temperature at which transmission and distribution operations normally take place. For volumetric properties (compression factor and density), the uncertainty of calculation is about ± 0,1 % (95 % confidence interval). For caloric properties (for example enthalpy, heat capacity, Joule-Thomson coefficient, speed of sound), the uncertainty of calculation is usually greater.
|
Published |
2005-09 |
Edition : 1 |
Number of pages : 42 |
Technical Committee |
75.060
Natural gas
|
| ISO 20765-2:2015 |
Natural gas — Calculation of thermodynamic properties — Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application |
ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.
|
Published |
2015-01 |
Edition : 1 |
Number of pages : 60 |
Technical Committee |
75.060
Natural gas
|
| ISO 20765-5:2022 |
Natural gas — Calculation of thermodynamic properties — Part 5: Calculation of viscosity, Joule-Thomson coefficient, and isentropic exponent |
This document specifies methods to calculate (dynamic) viscosity, Joule-Thomson coefficient, isentropic exponent, and speed of sound, excluding density, for use in the metering of natural gas flow.
|
Published |
2022-04 |
Edition : 1 |
Number of pages : 17 |
Technical Committee |
75.060
Natural gas
|
| ISO/TR 22302:2014 |
Natural gas — Calculation of methane number |
ISO/TR 22302:2014 describes methods for the calculation of the methane number (MN) of dry natural gas when the composition of the gas by mole fraction is known.
|
Withdrawn |
2014-07 |
Edition : 1 |
Number of pages : 11 |
Technical Committee |
75.060
Natural gas
|