ASTM D7345 Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Micro Distillation Method)
1. Scope
1.1 This test method covers a procedure for determination of the distillation characteristics of petroleum products and liquid fuels having boiling range between 20 °C to 400 °C at atmospheric pressure using an automatic micro distillation apparatus.

1.2 This test method is applicable to such products as; light and middle distillates, automotive spark-ignition engine fuels, automotive spark-ignition engine fuels containing up to 20 % ethanol, aviation gasolines, aviation turbine fuels, regular and low sulfur diesel fuels, biodiesel (B100), biodiesel blends up to 20 % biodiesel, special petroleum spirits, naphthas, white spirits, kerosines, burner fuels, and marine fuels.

1.3 The test method is also applicable to hydrocarbons with a narrow boiling range, like organic solvents or oxygenated compounds.

1.4 The test method is designed for the analysis of distillate products; it is not applicable to products containing appreciable quantities of residual material.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 This standard does not purport to address all of the safety concerns, if any, 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 prior to use.

1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents
2.1 All standards are subject to revision, and parties to agreement on this test method are to apply the most recent edition of the standards indicated below, unless otherwise specified, such as in contractual agreements or regulatory rules where earlier versions of the method(s) identified may be required.

2.2 ASTM Standards:
D86 Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure
D323 Test Method for Vapor Pressure ofPetroleum Products (Reid Method)
D1160 Test Method for Distillation ofPetroleum Products at Reduced Pressure
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D4953 Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method)
D5190 Test Method for Vapor Pressure of Petroleum Products (Automatic Method) (Withdrawn 2012)
D5191 Test Method for Vapor Pressure of Petroleum Products (Mini Method)
D5482 Test Method for Vapor Pressure of Petroleum Products (Mini Method - Atmospheric)
D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material

2.3 Energy Institute Standards:
IP 69 Petroleum Products - Determination of Vapour Pressure - Reid Method
IP 394 Liquid Petroleum Products - Vapour Pressure - Part 1: Determination of Air Saturated Vapour Pressure (ASVP)

2.4 ISO Standards:
Guide 34 General Requirements for the Competence of Reference Material Producers
Guide 35 Reference Materials - General and Statistical Principles for Certification

3. Terminology
3.1 Definitions ofTerms Specific to This Standard:
3.1.1 automatic apparatus, n - microprocessor-controlled unit that performs the procedures of automatically controlling the evaporation of a liquid specimen under specific conditions of this test method, collecting measurement data and converting this data by patented algorithm in order to predict distillation results in correlation with industry recognized reference method.

3.1.2 corrected temperature reading, n - temperature readings, as described in 3.1.12, corrected to 101.3 kPa barometric pressure.

3.1.3 end point (EP) or final boiling point (FBP), n - maximum corrected temperature readings obtained during the test at the instant the flask internal pressure returns to the initial pressure level registered by automatic apparatus.
3.1.3.1 Discussion - This usually occurs after the evaporation of all liquid from the bottom of the distillation flask. The term maximum temperature is a frequently used synonym.

3.1.4 flask internal pressure, n - pressure within the distillation flask obtained during the test by a differential pressure sensor of automatic apparatus.
3.1.4.1 Discussion - The flask internal pressure data recorded during the test is automatically converted to the volume percent recovered or evaporated data by patented algorithm employed by automatic apparatus.

3.1.5 initial boiling point (IBP), n - corrected temperature readings that corresponds to the instant of the flask internal pressure rise registered by automatic apparatus.

3.1.6 liquid temperature, n - temperature of the liquid specimen in the distillation flask during the test obtained by a liquid temperature measuring device of automatic apparatus.

3.1.7 percent evaporated, n - percent recovered corrected to a predicted by automatic analyzer evaporation loss percent. Percent evaporated is automatically reported for ASTM 7C thermometer correlation.

3.1.8 percent recovered, n - volume percent automatically reported by the analyzer; expressed as a percentage of the charge volume, associated with a simultaneous temperature readings. Percent recovered is reported for ASTM 8C thermometer correlation.

3.1.9 percent recovery, n - percent recovery predicted by the automatic apparatus and expressed as a percentage of the charge volume.

3.1.10 percent residue, n - volume of residue in the distillation flask predicted by the automatic apparatus and expressed as a percentage of the charge volume.

3.1.11 reference method, n - ASTM D86 test method or its analogs which is widely used for expression of the distillation characteristics of petroleum products in industry.

3.1.12 temperature readings, n - vapor and liquid temperature has through use of an algorithm of the automatic apparatus been adjusted to mimic the same temperature lag and emergent stem effects as would be seen when using an ASTM 7C/7F or 8C/8F liquid-in-glass thermometer to determine the distillation characteristics of the material under test by industry recognized reference method.

3.1.13 vapor temperature, n - temperature of the vapors in the distillation flask during the test obtained by a vapor temperature measuring device of automatic apparatus.