ISO 91:2017
Current
The latest, up-to-date edition.
Petroleum and related products — Temperature and pressure volume correction factors (petroleum measurement tables) and standard reference conditions
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
French, English
12-05-2017
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ISO 91:2017 refers to temperature volume correction factors, which allow users to convert volumes, measured at ambient conditions, to those at reference conditions for transactional purposes. This document also refers to compressibility factors required to correct hydrocarbon volumes measured under pressure to the corresponding volumes at the equilibrium pressure for the measured temperature.
| DevelopmentNote |
Supersedes ISO/DIS 91, ISO 91-1, ISO 91-2, ISO 5024 and ISO 9770. (05/2017)
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| DocumentType |
Standard
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| Pages |
16
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| ProductNote |
THIS STANDARD ALSO REFERES TO: ISO/R 91:1959,ISO/R 91:1970,ISO/R 91:1970/Amd 1:1975 , API/Standard 2540:1966,
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| PublisherName |
International Organization for Standardization
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| Status |
Current
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| Supersedes |
| Standards | Relationship |
| NEN ISO 91 : 2017 | Identical |
| DIN ISO 91:2019-12 | Identical |
| BS ISO 91:2017 | Identical |
| SS-ISO 91:2017 | Identical |
| NF ISO 91 : 2017 | Identical |
| PN-ISO 91:2024-09 | Identical |
| BS ISO 6578:2017 | Refrigerated hydrocarbon liquids. Static measurement. Calculation procedure |
| BS ISO 2715:2017 | Liquid hydrocarbons. Volumetric measurement by turbine flowmeter Volumetric measurement by turbine meter systems |
| ISO/TR 19441:2018 | Petroleum products Density versus temperature relationships of current fuels, biofuels and biofuel components |
| ISO 6578:2017 | Refrigerated hydrocarbon liquids — Static measurement — Calculation procedure |
| BS 718:1991 | Specification for density hydrometers |
| BS ISO 2714:2017 | Liquid hydrocarbons. Volumetric measurement by displacement meter Volumetric measurement by displacement meter systems other than dispensing pumps |
| BS 718:1979 | Specification for density hydrometers |
| ISO 2714:2017 | Liquid hydrocarbons — Volumetric measurement by displacement meter |
| BS 4714:1980 | Method for laboratory determination of density or relative density of crude petroleum and liquid petroleum products (hydrometer method) |
| BS 4699(1985) : 85 AMD 8893 | METHODS FOR DETERMINATION OF DENSITY OR RELATIVE DENSITY OF PETROLEUM AND PETROLEUM PRODUCTS (PYKNOMETER METHODS) |
| ISO 2715:2017 | Liquid hydrocarbons — Volumetric measurement by turbine flowmeter |
| BS 6665:1985 | Method for determination of density or relative density of liquefied petroleum gases and other light hydrocarbons by pressure hydrometer method |
| API 1101 : LATEST | MEASUREMENT OF LIQUID HYDROCARBONS BY POSITIVE DISPLACEMENT METER |
| GPA 2142 : 1957 | STANDARD FACTORS FOR VOLUME CORRECTION AND SPECIFIC GRAVITY CONVERSION OF LIQUEFIED PETROLEUM GASES |
| ISO 91-2:1991 | Petroleum measurement tables Part 2: Tables based on a reference temperature of 20 degrees C |
| ISO 13443:1996 | Natural gas Standard reference conditions |
| IP 3 : 1949 | AROMATIC CONTENT |
| ISO 91-1:1992 | Petroleum measurement tables Part 1: Tables based on reference temperatures of 15 degrees C and 60 degrees F |
| API MPMS CH11.2.1 : 1984 | MANUAL OF PETROLEUM MEASUREMENT STANDARDS - COMPRESSIBILITY FACTORS FOR HYDROCARBONS: 0-90 DEGREES API GRAVITY RANGE |
| API MPM CH11.2.1M : 1984 | MANUAL OF PETROLEUM MEASUREMENT STANDARDS - COMPRESSIBILITY FACTORS FOR HYDROCARBONS: 638-1074 KILOGRAMS PER CUBIC METER RANGE |
| API MPMS CH11.5 CD : 0 | MANUAL OF PETROLEUM MEASUREMENT STANDARDS - CHAPTER 11: PHYSICAL PROPERTIES DATA - SECTION 5: DENSITY/WEIGHT/VOLUME INTRACONVERSION - PART 1: CONVERSIONS OF API GRAVITY AT 60 DEGREES F; PART 2: CONVERSIONS FOR RELATIVE DENSITY (60/60 DEGREES F); PART 3: CONVERSIONS FOR ABSOLUTE DENSITY AT 15 DEGREES C |
| ISO 9770:1989 | Crude petroleum and petroleum products Compressibility factors for hydrocarbons in the range 638 kg/m3 to 1 074 kg/m3 |
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