This European Standard describes a method for the determination of the boiling range distribution of petroleum products by capillary gas chromatography using flame ionisation detection. The standard is applicable to crude oils. The boiling range distribution and recovery to C100 or C120 can be determined.
Two procedures are described: single and dual analysis mode. The basis of each is the calculation procedure as described in Annex A.
NOTE 1   This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations.
NOTE 2   For the purposes of this European Standard, the terms "% (m/m)" and "% (V/V)" are used to represent respectively the mass fraction and the volume fraction.
WARNING : Use of this European Standard may involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.

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This European Standard defines the methods of tests for the determination of the characteristics of crude tar and crude benzole.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): TC Res.5/1999: Revision of EN ISO 3838:1995 under // vote ISO lead. However in ++ ISO, it is not formal yet, Mr. Williams is being asked to check (TA/990702) ++  New TC forecasts in rev BP (NT/01-01-02)

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ISO 3838:2004 specifies methods for the determination of the density or relative density of crude petroleum and of petroleum products handled as liquids.
The capillary-stoppered pyknometer method is also for use with solids and this method may also be used for coal tar products, including road tars, creosote and tar pitches, or for mixtures of these with petroleum products. This method is not suitable for the determination of the density or relative density of highly volatile liquids having Reid vapour pressures greater than 50 kPa according to ISO 3007 or having an initial boiling point below 40 degrees Celsius.
The graduated bicapillary pyknometer method is recommended for the accurate determination of the density or relative density of all except the more viscous products, and is particularly useful when only small amounts of samples are available. The method is restricted to liquids having Reid vapour pressures of 130 kPa or less according to ISO 3007 and having kinematic viscosities less than 50 mm2/s (50 centistokes (cSt)) at the test temperature.
Special precautions are specified for the determination of the density or relative density of highly volatile liquids.

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This International Standard specifies a method for the determination of the vapour pressure of liquid petroleum
products consisting of essentially or wholly of hydrocarbon components, or containing oxygenated hydrocarbons of
specific types and at specified maximum concentrations. The method does not apply outside these concentration
levels, nor to any blends containing methanol or other oxygenated hydrocarbons not covered in note 1.
NOTE 1 The maximum concentration of ethers containing 5 or more carbon atoms is 15 % (V/V), and for ethanol is 10 %
(V/V). For higher alcohols, the maximum concentration is 7 % (V/V).
NOTE 2 For the purposes of this International Standard, the term "%(V/V)" is used to represent the volume fraction of a
material.
For petroleum products containing methanol, or other oxygenated hydrocarbons outside the scope of note 1, a dry
vapour-pressure test method should be used. For liquefied petroleum gases, ISO 4256 should be used. The test
method may be applied to volatile crude petroleum with a vapour pressure exceeding 10 kPa, although the
precision has not been evaluated.
Four procedures are described in this International Standard. Procedures A and B are alternative apparatus
configurations for products with a Reid vapour pressure up to 180 kPa, Procedure C is applied to liquid products
with a Reid vapour pressure above 180 kPa, and Procedure D applies to aviation gasolines with a Reid vapour
pressure of approximately 50 kPa.
Vapour pressure is an important physical property of volatile liquids, and has critical performance implications for
automotive and aviation gasolines. Vapour pressure is also one of the properties affecting atmospheric evaporation,
and is therefore increasingly used in regulations relating to emissions and air quality control. Vapour pressure is
also a critical property limiting the performance and safety of operation of equipment during transfer operations.
NOTE Because the external atmospheric pressure is counteracted by the atmospheric pressure initially in the vapour
chamber, the Reid vapour pressure is approximately the "absolute" vapour pressure at 37,8 °C. The Reid vapour pressure
differs from the true vapour pressure of the sample owing to slight vaporization of the sample and the pressure of water vapour
and air in the confined space.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Revision of EN ISO 3675:1995

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Updating of existing EN implementations of ISO standards (standing resolution); ++ Will go to VA.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Updating of existing EN implementations of ISO standards (standing resolution); ++ Will go to VA.

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Gives a method for the determination, using an oscillation U-tube densitometer, of the density of crude petroleum and related products within the range 600 kg/m^3 to 1 100 kg/m^3 which can be handled as single-phase liquids at the test temperature and pressure.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Decision of BT to submit this ISO document to UAP procedure.

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Specifies a method for the laboratory determination. The precision data of this procedure have only been determined for water contents up to 1 % (V/V). Includes principle, apparatus, reagents, sampling, procedure, expression of results, precision and test report. A centrifuge tube is shown in figure 1. The procedure for reading the volume of water and sediment is shown in figure 2. The precision of the method is shown in figure 3. The sample handling is described in annex A.

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The precision data of this procedure have only been determined for water contents up to 1 % (V/V). Includes principle, apparatus, solvent, calibration and recovery test, sampling, procedure, expression of results, precision and test report. The distillation apparatus is shown in figures 1 and 2. The precision of the method is shown in figure 3. The sample handling is described in annex A.

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The precision data of this procedure have only been determined for water contents up to 1 % (V/V). Includes principle, apparatus, solvent, calibration and recovery test, sampling, procedure, expression of results, precision and test report. The distillation apparatus is shown in figures 1 and 2. The precision of the method is shown in figure 3. The sample handling is described in annex A.

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Specifies a method for the laboratory determination. The precision data of this procedure have only been determined for water contents up to 1 % (V/V). Includes principle, apparatus, reagents, sampling, procedure, expression of results, precision and test report. A centrifuge tube is shown in figure 1. The procedure for reading the volume of water and sediment is shown in figure 2. The precision of the method is shown in figure 3. The sample handling is described in annex A.

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This European standard describes a method for the determination of the boiling range distribution of petroleum products by capillary gas chromatography using flame ionisation detection. The standard is applicable to crude oils. The boiling range distribution and recovery to C100 or C120 can be determined.Two procedures are described: single and dual analysis mode. The basis of each is the calculation procedure as described in Annex A.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Decision of BT to submit this ISO document to UAP procedure.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): Decision of BT to submit this ISO document to UAP procedure.

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The precision data of this procedure have only been determined for water contents up to 1 % (V/V). Includes principle, apparatus, solvent, calibration and recovery test, sampling, procedure, expression of results, precision and test report. The distillation apparatus is shown in figures 1 and 2. The precision of the method is shown in figure 3. The sample handling is described in annex A.

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