ASTM D2068-08
(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 distillate fuel cleanliness in those applications that demand a high throughput per installed filter.
A change in filtration performance after storage or pretreatment can be indicative of changes in fuel condition.
Causes of poor filterability might include fuel degradation products, contaminants picked up during storage or transfer, or interaction of the fuel with the filter media. Any of these could correlate with orifice or filter system plugging, or both.
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 40C.Note 1
ASTM specification fuels falling within the scope of this test method are: Specifications D 396 Grades No 1 and 2; Specification D 975 Grades 1-D, low sulfur 1-D and 2-D; Specification D 2880 Grades 1-GT and 2-GT; Specification D 6751.
1.2 This test method is not applicable to fuels that contain free (undissolved) water (see ).
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:D2068–08
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* 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 Free Water and Particulate Con-
of middle distillate fuel oils and liquid fuels such as biodiesel
tamination in Distillate Fuels (Visual Inspection Proce-
and biodiesel blends. The 3 procedures and associated filter
dures)
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 Free Water and Particulate Con-
method are: Specifications D396 Grades No 1 and 2; Specification D975
tamination in Middle Distillate Fuels (Clear and Bright
Grades 1-D, low sulfur 1-D and 2-D; Specification D2880 Grades 1-GT
Numerical Rating)
and 2-GT; Specification D6751.
D6426 Test Method for Determining Filterability of Middle
1.2 This test method is not applicable to fuels that contain
Distillate Fuel Oils
free (undissolved) water (see 7.3).
D6751 Specification for Biodiesel Fuel Blend Stock (B100)
1.3 The values stated in SI units are to be regarded as
for Middle Distillate Fuels
standard. No other units of measurement are included in this
4
2.2 ISO Standard:
standard.
ISO 5636-5 Paper and Board—Determination of Air Per-
1.4 This standard does not purport to address all of the
meance and Air Resistance (Medium Range) Part 5
safety concerns, if any, associated with its use. It is the
Gurley Method
responsibility of the user of this standard to establish appro-
2.3 ASTM Adjuncts:
priate safety and health practices and determine the applica-
D2PP, Determination of Precision and Bias Data for Use in
bility of regulatory limitations prior to use. 5
Test Methods for Petroleum Products
CompTM, Standard Practice for Statistical Assessment and
2. Referenced Documents
Improvement of the Expected Agreement between Two
3
2.1 ASTM Standards:
Test Methods that Purport to Measure the Same Property
D396 Specification for Fuel Oils
6
of a Material
D975 Specification for Diesel Fuel Oils
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee D02 on
3.1.1 filter blocking tendency (FBT), n—of certain fuels,a
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.14 on Stability and Cleanliness of Liquid Fuels. calculated dimensionless value that defines the tendency of
Current edition approved July 1, 2008. Published August 2008. Originally
particulates in a fuel to plug or block a filter.
approved in 1997. Last previous edition approved in 2004 as D2068–04. DOI:
10.1520/D2068-08.
2 4
This standard has been developed through the cooperative effort between Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
ASTM and the Energy Institute, London. 4th Floor, New York, NY 10036, http://www.ansi.org.
3 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from ASTM International Headquarters. Order Adjunct No.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM ADJ6300.
6
Standards volume information, refer to the standard’s Document Summary page on Available from ASTM International Headquarters. Order Adjunct No.
the ASTM website. ADJ6708. Original adjunct produced in 2005.
*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
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D2068–08
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 the outcome of the test, one of two
equations is applied. See Section 10, Calculation. See 5.6 for
interpretation of results.
3.1.2 filterability, n—of certain fuels,
...
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.
An American National Standard
Designation:D2068–04 Designation:D2068–08
Standard Test Method for
Filter Plugging Tendency of Distillate Fuel Oils Determining
,
1 2
Filter Blocking Tendency
This standard is issued under the fixed designation D 2068; 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 D 2068
procedure, do not substitute a different procedure or filter without agreement from the specifier.
1. Scope*
1.1This test method covers a procedure for determining the filter plugging tendency (FPT) of distillate fuel oils where the end
use demands an exceptional degree of cleanliness.This test method is applicable to fuels within the viscosity range of 1.50 to 6.00
mm
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 (cSt) at 40°C.
NOTE1—ASTM Specification fuels falling within the scope of this test method are Specification D 396 Grade Numbers 1 and 2, Specification D 975
Grades 1-D, low sulfur 1-D, 2-D, and low sulfur 2-D, Specification D 2880 Grades 1-GT and 2-GT and Specification D 3699 kerosine.
1.2This test method is not applicable to fuels that are not clear and bright because water interferes with the measurement of filter
plugging.
1.3Relative tendency of fuels to plug filters may vary depending on filter porosity and structure, and may not always correlate
with results from this test method.
1.4AnnexA1describesastandardprocedureforpreparingatestfluidforuseincalibratingtheapparatususedinthistestmethod.
1.5
1.6This standard does not purport to address all of the safety concerns, if any, associated with its use. It is 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—ASTM specification fuels falling within the scope of this test method are: Specifications D 396 Grades No 1 and
2; Specification D 975 Grades 1-D, low sulfur 1-D and 2-D; Specification D 2880 Grades 1-GT and 2-GT; Specification D 6751.
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:
D 396 Specification for Fuel Oils
D445Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity)
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 Nov.July 1, 2004.2008. Published November 2004.August 2008. Originally approved in 1997. Last previous edition approved in 20032004 as
D2068–97(2003).D 2068–04.
2
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.
2
This standard has been developed through the cooperative effort between ASTM and the Energy Institute, London.
3
The sole source of supply of an assembled unit known to the committee at this time is UnitorASA, Drammensveien 211, PO Box 300, Skøyen N-0213, Oslo, Norway.
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.
*A Summary of Changes section appears a
...
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