ISO 14912:2003
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
View Superseded by
Gas analysis — Conversion of gas mixture composition data
Hardcopy , PDF
03-03-2003
02-11-2025
ISO 14912:2003 defines the following quantities commonly used to express the composition of gas mixtures: mole fraction, mass fraction and volume fraction, as well as mole concentration, mass concentration and volume concentration.
Relating to these quantities of composition, ISO 14912:2003 provides methods for the conversion between different quantities and the conversion between different state conditions. Conversion between different quantities means calculating the numerical value of an analyte content in terms of one of the quantities listed above from the numerical value of the same analyte content, at the same pressure and temperature of the gas mixture, given in terms of another of these quantities. Conversion between different state conditions means calculating the numerical value of an analyte content, in terms of one of the quantities listed above, under one set of state conditions from the numerical value of the same quantity under another set of state conditions, i.e. pressure and temperature, of the gas mixture. Gas mixture composition can be converted simultaneously between different quantities of composition and different state conditions by combination of the two types of conversion.
ISO 14912:2003 is only applicable to homogeneous and stable gas mixtures. Therefore any state conditions (pressure and temperature) considered need to be well outside from the condensation region of the gas mixture and that of each of the specified analytes.
| Committee |
ISO/TC 158
|
| DevelopmentNote |
Supersedes ISO/DIS 14912. (03/2003)
|
| DocumentType |
Standard
|
| Pages |
58
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy | |
| UnderRevision |
| Standards | Relationship |
| NF EN ISO 14912 : 2006 | Identical |
| NBN EN ISO 14912 : 2006 COR 2007 | Identical |
| NEN ISO 14912 : 2003 C1 2006 | Identical |
| NEN EN ISO 14912 : 2006 C1 2007 | Identical |
| NS EN ISO 14912 : 2006 AC 2007 | Identical |
| I.S. EN ISO 14912:2007 | Identical |
| PN EN ISO 14912 : 2008 AC 2008 | Identical |
| BIS IS 16252 : 2014 | Identical |
| BS ISO 14912 : 2003 | Identical |
| BS EN ISO 14912:2006 | Identical |
| DIN EN ISO 14912:2006-11 | Identical |
| ONORM EN ISO 14912 : 2008 | Identical |
| DS EN ISO 14912 : 2006 COR 2008 | Identical |
| UNE-EN ISO 14912:2007 | Identical |
| I.S. EN ISO 6142-1:2015 | GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS 1 MIXTURES (ISO 6142-1:2015) |
| DD ISO/TS 29041:2008 | Gas mixtures. Gravimetric preparation. Mastering correlations in composition |
| 13/30214514 DC : 0 | BS ISO 6145-2 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 2: VOLUMETRIC PUMPS |
| 16/30266428 DC : DRAFT MAR 2016 | BS EN ISO 6145-6 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 6: CRITICAL FLOW ORIFICES |
| BS EN ISO 6145-6:2017 | Gas analysis. Preparation of calibration gas mixtures using dynamic methods Critical flow orifices |
| BS EN ISO 6142-1:2015 | Gas analysis. Preparation of calibration gas mixtures Gravimetric method for Class I mixtures |
| BS ISO 6145-2:2014 | Gas analysis. Preparation of calibration gas mixtures using dynamic methods Piston pumps |
| BS EN ISO 6976:2005 | Natural gas. Calculation of calorific values, density, relative density and Wobbe index from composition |
| I.S. EN 838:2010 | WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS |
| EN 1076:2009 | Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods |
| EN 12021:2014 | Respiratory equipment - Compressed gases for breathing apparatus |
| 14/30250844 DC : 0 | BS EN ISO 6142-1 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS 1 MIXTURES |
| DIN EN ISO 6142-1:2015-12 | GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS I MIXTURES (ISO 6142-1:2015) |
| 08/30163829 DC : DRAFT JAN 2008 | BS EN 1076 - WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS |
| ISO 7504:2015 | Gas analysis — Vocabulary |
| I.S. EN 16726:2015 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
| DIN EN 1076:2010-04 | Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods |
| DIN EN 12021:2014-07 | RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS |
| I.S. EN 12021:2014 | RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS |
| I.S. EN ISO 6976:2016 | NATURAL GAS - CALCULATION OF CALORIFIC VALUES, DENSITY, RELATIVE DENSITY AND WOBBE INDICES FROM COMPOSITION (ISO 6976:2016) |
| 13/30255474 DC : 0 | BS ISO 7504 - GAS ANALYSIS - VOCABULARY |
| ISO/TS 29041:2008 | Gas mixtures — Gravimetric preparation — Mastering correlations in composition |
| I.S. EN ISO 6145-6:2017 | GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 6: CRITICAL FLOW ORIFICES (ISO 6145-6:2017) |
| DIN EN 16726:2016-04 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
| BS EN 1076:2009 | Workplace exposure. Procedures for measuring gases and vapours using pumped samplers. Requirements and test methods |
| 17/30345272 DC : 0 | BS ISO 14167 - GAS ANALYSIS - GENERAL QUALITY ASPECTS AND METROLOGICAL TRACEABILITY OF CALIBRATION GAS MIXTURES |
| OIML R 99-1 & 2 : 2008 | INSTRUMENTS FOR MEASURING VEHICLE EXHAUST EMISSIONS - PART 1: METROLOGICAL AND TECHNICAL REQUIREMENTS; PART 2: METROLOGICAL CONTROLS AND PERFORMANCE TESTS |
| ISO 19229:2015 | Gas analysis — Purity analysis and the treatment of purity data |
| BS 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 6145-2:2014 | Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 2: Piston pumps |
| BS ISO 19229:2015 | Gas analysis. Purity analysis and the treatment of purity data |
| DIN EN 838:2010-05 | Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods |
| ISO 6142-1:2015 | Gas analysis — Preparation of calibration gas mixtures — Part 1: Gravimetric method for Class I mixtures |
| ISO 6976:2016 | Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
| BS EN 12021:2014 | Respiratory equipment. Compressed gases for breathing apparatus |
| BS EN 838:2010 | Workplace exposure. Procedures for measuring gases and vapours using diffusive samplers. Requirements and test methods |
| ISO 6145-6:2017 | Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 6: Critical flow orifices |
| I.S. EN 1076:2009 | WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS |
| EN ISO 6976:2016 | Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016) |
| EN ISO 6142-1:2015 | Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures (ISO 6142-1:2015) |
| EN 16726:2015 | Gas infrastructure - Quality of gas - Group H |
| EN ISO 6145-6:2017 | Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices (ISO 6145-6:2017) |
| EN 838:2010 | Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods |
| 12/30272264 DC : 0 | BS ISO 20765-2 - NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 2: SINGLE-PHASE PROPERTIES (GAS, LIQUID, AND DENSE FLUID) FOR EXTENDED RANGES OF APPLICATION |
| BS EN 16726 : 2015 | GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H |
| 14/30295048 DC : 0 | BS ISO 19229 - GAS ANALYSIS - PURITY ANALYSIS AND THE TREATMENT OF PURITY DATA |
| 15/30289053 DC : 0 | BS ISO 6976 - NATURAL GAS - CALCULATION OF CALORIFIC VALUES, DENSITY, RELATIVE DENSITY AND WOBBE INDEX FROM COMPOSITION |
| BS ISO 7504:2015 | Gas analysis. Vocabulary |
| 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 |
| DIN EN 12021:1999-01 | RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS |
| UNE-EN ISO 6142-1:2016 | Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures (ISO 6142-1:2015) |
| UNE-EN 16726:2016 | Gas infrastructure - Quality of gas - Group H |
| UNE-EN ISO 6976:2017 | Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016) |
| UNE-ISO 7504:2016 | Gas analysis. Vocabulary |
| UNE-EN 12021:2014 | Respiratory equipment - Compressed gases for breathing apparatus |
| ISO 6976:2016 | Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
| ISO/IEC Guide 98:1993 | Guide to the expression of uncertainty in measurement (GUM) |
| ISO 12213-3:2006 | Natural gas — Calculation of compression factor — Part 3: Calculation using physical properties |
| DIN 51896-2:1994-09 | GAS ANALYSIS; QUANTITIES OF COMPOSITION, COMPRESSIBILITY FACTOR - PART 2: APPLICATION |
| DIN 1871:1999-05 | Gaseous fuels and other gases - Density and other volumetric quantities |
| ISO/IEC Guide 99:2007 | International vocabulary of metrology — Basic and general concepts and associated terms (VIM) |
| ISO 12213-1:2006 | Natural gas — Calculation of compression factor — Part 1: Introduction and guidelines |
| ISO 7504:2015 | Gas analysis — Vocabulary |
| DIN 51896-1:1991-10 | GAS ANALYSIS; QUANTITIES OF COMPOSITIONS, COMPRESSIBILITY FACTOR, BASIS |
| ISO 12213-2:2006 | Natural gas — Calculation of compression factor — Part 2: Calculation using molar-composition analysis |
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