ASTM D2068-10
(Test Method)Standard Test Method for Determining Filter Blocking Tendency
Standard Test Method for Determining Filter Blocking Tendency
SIGNIFICANCE AND USE
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.
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.
A change in filtration performance after storage or pretreatment can be indicative of changes of fuel condition.
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.
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.
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 − 10
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 3 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* D2880 Specification for Gas Turbine Fuel Oils
D4057 Practice for Manual Sampling of Petroleum and
1.1 This test method covers three procedures for the deter-
Petroleum Products
mination of the filter blocking tendency (FBT) and filterability
D4176 Test Method for FreeWater and Particulate Contami-
of middle distillate fuel oils and liquid fuels such as biodiesel
nation in Distillate Fuels (Visual Inspection Procedures)
and biodiesel blends. The 3 procedures and associated filter
D4177 Practice for Automatic Sampling of Petroleum and
types, are applicable to fuels within the viscosity range of 1.3
2 Petroleum Products
to 6.0 mm /s at 40°C.
D4860 Test Method for FreeWater and Particulate Contami-
NOTE 1—ASTM specification fuels falling within the scope of this test
nation in Middle Distillate Fuels (Clear and Bright Nu-
method are: Specifications D396 Grades No 1 and 2; Specification D975
merical Rating)
Grades 1-D, low sulfur 1-D and 2-D; Specification D2880 Grades 1-GT
D6426 Test Method for Determining Filterability of Middle
and 2-GT; Specification D6751.
Distillate Fuel Oils
1.2 This test method is not applicable to fuels that contain
D6751 Specification for Biodiesel Fuel Blend Stock (B100)
free (undissolved) water (see 7.3).
for Middle Distillate Fuels
4
1.3 The values stated in SI units are to be regarded as
2.2 ISO Standard:
standard. No other units of measurement are included in this
ISO 5636-5 Paper and Board—Determination of Air Per-
standard.
meance and Air Resistance (Medium Range) Part 5
Gurley Method
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 2.3 ASTM Adjuncts:
responsibility of the user of this standard to establish appro- D2PP, Determination of Precision and Bias Data for Use in
5
priate safety and health practices and determine the applica- Test Methods for Petroleum Products
bility of regulatory limitations prior to use. CompTM, Standard Practice for Statistical Assessment and
Improvement of the Expected Agreement between Two
2. Referenced Documents
Test Methods that Purport to Measure the Same Property
5
3
of a Material
2.1 ASTM Standards:
D396 Specification for Fuel Oils
3. Terminology
D975 Specification for Diesel Fuel Oils
3.1 Definitions of Terms Specific to This Standard:
3.1.1 filter blocking tendency (FBT), n—of certain fuels,a
1
This test method is under the jurisdiction of ASTM Committee D02 on
calculated dimensionless value that defines the tendency of
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
particulates in a fuel to plug or block a filter.
D02.14 on Stability and Cleanliness of Liquid Fuels.
Current edition approved Oct. 1, 2010. Published November 2010. Originally
3.1.1.1 Discussion—The value is calculated using the pres-
approved in 1997. Last previous edition approved in 2008 as D2068–08. DOI:
sure across the filter or the volume of fuel filtered at the end of
10.1520/D2068-10.
2 the test. Depending on the outcome of the test, one of two
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 − 10
equations is applied. See Section 10, Calculation. See 5.6 for
interpretation of results.
3.1.2 filterability, n—of certain fuels, the relationship be-
tween the volume of sample filtered and the measured pressure
increase across the filter.
3.1.2.1 Discussion
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D2068–08 Designation:D2068–10
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 3 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—ASTMspecificationfuelsfallingwithinthescopeofthistestmethodare:SpecificationsD396GradesNo1and2;SpecificationD975Grades
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)
D6426 Test Method for Determining Filterability of Middle Distillate Fuel Oils
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
2.3 ASTM Adjuncts:
5
D2PP, Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products
CompTM,StandardPracticeforStatisticalAssessmentandImprovementoftheExpectedAgreementbetweenTwoTestMethods
5
that Purport to Measure the Same Property of a Material
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 JulyOct. 1, 2008.2010. Published August 2008.November 2010. Originally approved in 1997. Last previous edition approved in 20042008 as
D2068–04.D2068–08. DOI: 10.1520/D2068-108.
2
This standard has been developed through the cooperative effort between ASTM and the Energy Institute, London.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
5
Available from ASTM International Headquarters. Order Adjunct No. ADJ6300.
5
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 ----------------------
D2068–10
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 pressure across the filter o
...
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