ASTM D2068-12
(Test Method)Standard Test Method for Determining Filter Blocking Tendency
Standard Test Method for Determining Filter Blocking Tendency
SIGNIFICANCE AND USE
5.1 This test method is intended for use in evaluating the cleanliness of middle distillate fuels, and biodiesel and biodiesel blends for specifications and quality control purposes.
5.2 The filter media specified in the three procedures are all suitable for the materials in the Scope. Specifications calling up this test method should state the procedure required.
5.3 A change in filtration performance after storage or pretreatment can be indicative of changes of fuel condition.
5.4 The filterability of fuels varies depending on filter porosity and structure and therefore results from this test method might not correlate with full scale filtration.
5.5 Causes of poor filterability in industrial/refinery filters include fuel degradation products, contaminants (including water) picked up during storage or transfer, effects due to temperature or composition for bio fuels, incompatibility of commingled fuels, or interaction of the fuel with the filter media. Any of these could correlate with orifice or filter system plugging, or both.
5.6 The results of the FBT test can range from 1 with a fuel with very good filterability, to over 100 for a fuel with poor filterability. The selection of a single FBT number to define a pass or fail criteria is not possible as this will be dependent on the fuel type and applications.
SCOPE
1.1 This test method covers three procedures for the determination of the filter blocking tendency (FBT) and filterability of middle distillate fuel oils and liquid fuels such as biodiesel and biodiesel blends. The 3 procedures and associated filter types, are applicable to fuels within the viscosity range of 1.3 to 6.0 mm2/s at 40°C.Note 1—ASTM specification fuels falling within the scope of this test method are: Specifications D396 Grades No 1 and 2; Specification D975 Grades 1-D, low sulfur 1-D and 2-D; Specification D2880 Grades 1-GT and 2-GT; Specification D6751.
1.2 This test method is not applicable to fuels that contain free (undissolved) water (see 7.3).
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
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Designation: D2068 − 12
387/11
StandardTest Method for
1,2
Determining Filter Blocking Tendency
This standard is issued under the fixed designation D2068; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This test method describes three procedures using different filter media. The result of any test is
dependent on the filter mandated in the procedure. If a specification requires a specific D2068
procedure, do not substitute a different procedure or filter without agreement from the specifier.
1. Scope* D975 Specification for Diesel Fuel Oils
D2880 Specification for Gas Turbine Fuel Oils
1.1 This test method covers three procedures for the deter-
D4057 Practice for Manual Sampling of Petroleum and
mination of the filter blocking tendency (FBT) and filterability
Petroleum Products
of middle distillate fuel oils and liquid fuels such as biodiesel
D4176 Test Method for FreeWater and Particulate Contami-
and biodiesel blends. The 3 procedures and associated filter
nation in Distillate Fuels (Visual Inspection Procedures)
types, are applicable to fuels within the viscosity range of 1.3
2 D4177 Practice for Automatic Sampling of Petroleum and
to 6.0 mm /s at 40°C.
Petroleum Products
NOTE 1—ASTM specification fuels falling within the scope of this test
D4860 Test Method for FreeWater and Particulate Contami-
method are: Specifications D396 Grades No 1 and 2; Specification D975
nation in Middle Distillate Fuels (Clear and Bright Nu-
Grades 1-D, low sulfur 1-D and 2-D; Specification D2880 Grades 1-GT
merical Rating)
and 2-GT; Specification D6751.
D6300 Practice for Determination of Precision and Bias
1.2 This test method is not applicable to fuels that contain
Data for Use in Test Methods for Petroleum Products and
free (undissolved) water (see 7.3).
Lubricants
1.3 The values stated in SI units are to be regarded as
D6426 Test Method for Determining Filterability of Middle
standard. No other units of measurement are included in this
Distillate Fuel Oils
standard.
D6708 Practice for StatisticalAssessment and Improvement
of Expected Agreement Between Two Test Methods that
1.4 This standard does not purport to address all of the
Purport to Measure the Same Property of a Material
safety concerns, if any, associated with its use. It is the
D6751 Specification for Biodiesel Fuel Blend Stock (B100)
responsibility of the user of this standard to establish appro-
for Middle Distillate Fuels
priate safety and health practices and determine the applica-
4
bility of regulatory limitations prior to use. 2.2 ISO Standard:
ISO 5636-5 Paper and Board—Determination of Air Per-
2. Referenced Documents
meance and Air Resistance (Medium Range) Part 5
3
2.1 ASTM Standards:
Gurley Method
D396 Specification for Fuel Oils
2.3 ASTM Adjuncts:
D2PP, Determination of Precision and Bias Data for Use in
1
5
This test method is under the jurisdiction of ASTM Committee D02 on
Test Methods for Petroleum Products
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
CompTM, Standard Practice for Statistical Assessment and
D02.14 on Stability and Cleanliness of Liquid Fuels.
Improvement of the Expected Agreement between Two
Current edition approved June 1, 2012. Published October 2012. Originally
approved in 1997. Last previous edition approved in 2010 as D2068–10. DOI:
Test Methods that Purport to Measure the Same Property
10.1520/D2068-12. 5
of a Material
2
This standard has been developed through the cooperative effort between
ASTM and the Energy Institute, London.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Standards volume information, refer to the standard’s Document Summary page on 4th Floor, New York, NY 10036, http://www.ansi.org.
5
the ASTM website. This adjunct has been withdrawn and is no longer available.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2068 − 12
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 filter blocking tendency (FBT), n—of certain fuels,a
calculated dimensionless value that defines the tendency of
particulates in a fuel to plug or block a filter.
3.1.1.1 Discussion—The value is calculated using the pres-
sure across the filter or the volume of fuel filtered at the end of
the test. Depending on t
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2068 − 10 D2068 − 12
Standard Test Method for
1,2
Determining Filter Blocking Tendency
This standard is issued under the fixed designation D2068; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This test method describes 3three procedures using different filter media. The result of any test is
dependent on the filter mandated in the procedure. If a specification requires a specific D2068
procedure, do not substitute a different procedure or filter without agreement from the specifier.
1. Scope*
1.1 This test method covers three procedures for the determination of the filter blocking tendency (FBT) and filterability of
middle distillate fuel oils and liquid fuels such as biodiesel and biodiesel blends. The 3 procedures and associated filter types, are
2
applicable to fuels within the viscosity range of 1.3 to 6.0 mm /s at 40°C.
NOTE 1—ASTM specification fuels falling within the scope of this test method are: Specifications D396 Grades No 1 and 2; Specification D975 Grades
1-D, low sulfur 1-D and 2-D; Specification D2880 Grades 1-GT and 2-GT; Specification D6751.
1.2 This test method is not applicable to fuels that contain free (undissolved) water (see 7.3).
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
2. Referenced Documents
3
2.1 ASTM Standards:
D396 Specification for Fuel Oils
D975 Specification for Diesel Fuel Oils
D2880 Specification for Gas Turbine Fuel Oils
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4176 Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D4860 Test Method for Free Water and Particulate Contamination in Middle Distillate Fuels (Clear and Bright Numerical
Rating)
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
D6426 Test Method for Determining Filterability of Middle Distillate Fuel Oils
D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport
to Measure the Same Property of a Material
D6751 Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels
4
2.2 ISO Standard:
ISO 5636-5 Paper and Board—Determination of Air Permeance and Air Resistance (Medium Range) Part 5 Gurley Method
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.14 on
Stability and Cleanliness of Liquid Fuels.
Current edition approved Oct. 1, 2010June 1, 2012. Published November 2010October 2012. Originally approved in 1997. Last previous edition approved in 20082010
as D2068–08.–10. DOI: 10.1520/D2068-10.10.1520/D2068-12.
2
This standard has been developed through the cooperative effort between ASTM and the Energy Institute, London.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2068 − 12
2.3 ASTM Adjuncts:
5
D2PP, Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products
CompTM, Standard Practice for Statistical Assessment and Improvement of the Expected Agreement between Two Test
5
Methods that Purport to Measure the Same Property of a Material
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 filter blocking tendency (FBT), n—of certain fu
...
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