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ASTM D2068-04

(Test Method)

Standard Test Method for Filter Plugging Tendency of Distillate Fuel Oils

Standard Test Method for Filter Plugging Tendency of Distillate Fuel Oils

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 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 mm2/s (cSt) at 40°C.Note 1
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.
1.2 This test method is not applicable to fuels that are not clear and bright because water interferes with the measurement of filter plugging.
1.3 Relative 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.
1.4 describes a standard procedure for preparing a test fluid for use in calibrating the apparatus used in this test method.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 This 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.

General Information

Status
Historical
Publication Date
31-Oct-2004
ICS
75.160.20 - Liquid fuels
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.14 - Stability, Cleanliness and Compatibility of Liquid Fuels
Current Stage
Ref Project

Relations

Replaces
ASTM D2068-97(2003) - Standard Test Method for Filter Blocking Tendency of Distillate Fuel Oils
Effective Date
01-Nov-2004
Replaced By
ASTM D2068-08 - Standard Test Method for Determining Filter Blocking Tendency
Effective Date
01-Jul-2008
Referred By
ASTM D8386-21 - Standard Test Method for Determining Enhanced Filter Blocking Tendency (EFBT)
Effective Date
01-Nov-2004
Referred By
ASTM D8506-23 - Standard Guide for Microbial Contamination and Biodeterioration in Turbine Oils and Turbine Oil Systems
Effective Date
01-Nov-2004
Referred By
ASTM D6469-20 - Standard Guide for Microbial Contamination in Fuels and Fuel Systems
Effective Date
01-Nov-2004

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ASTM D2068-04 - Standard Test Method for Filter Plugging Tendency of Distillate Fuel OilsASTM D2068-04 - Standard Test Method for Filter Plugging Tendency of Distillate Fuel Oils
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ASTM D2068-04 - Standard Test Method for Filter Plugging Tendency of Distillate Fuel Oils
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D2068–04
Standard Test Method for
1
Filter Plugging Tendency of Distillate Fuel Oils
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* D 445 Test Method for Kinematic Viscosity of Transparent
and Opaque Liquids (and the Calculation of Dynamic
1.1 This test method covers a procedure for determining the
Viscosity)
filter plugging tendency (FPT) of distillate fuel oils where the
D 975 Specification for Diesel Fuel Oils
endusedemandsanexceptionaldegreeofcleanliness.Thistest
D 1500 Test Method for ASTM Color of Petroleum Prod-
method is applicable to fuels within the viscosity range of 1.50
2
ucts (ASTM Color Scale)
to 6.00 mm /s (cSt) at 40°C.
D 2880 Specification for Gas Turbine Fuel Oils
NOTE 1—ASTM Specification fuels falling within the scope of this test
D 3699 Specifications for Kerosine
method are Specification D 396 Grade Numbers 1 and 2, Specification D
D 4057 Practice for Manual Sampling of Petroleum and
975 Grades 1-D, low sulfur 1-D, 2-D, and low sulfur 2-D, Specification D
Petroleum Products
2880 Grades 1-GT and 2-GT and Specification D 3699 kerosine.
D 4176 Test Method for Free Water and Particulate Con-
1.2 This test method is not applicable to fuels that are not
tamination in Distillate Fuels (Visual Inspection Proce-
clearandbrightbecausewaterinterfereswiththemeasurement
dures)
of filter plugging.
D 4177 Practice for Automatic Sampling of Petroleum and
1.3 Relative tendency of fuels to plug filters may vary
Petroleum Products
depending on filter porosity and structure, and may not always
correlate with results from this test method.
3. Terminology
1.4 Annex A1 describes a standard procedure for preparing
3.1 Definitions:
a test fluid for use in calibrating the apparatus used in this test
3.2 For this test method, fuel filter plugging tendency (FPT)
method.
can be described in either of the following two ways:
1.5 The values stated in SI units are to be regarded as the
3.3 filter plugging—the pressure drop across a 1.6 µm pore
standard. The values given in parentheses are for information
size glass fiber filter when 300 mLof fuel is passed at a rate of
only.
20 mL/min.
1.6 This standard does not purport to address all of the
3.4 filter plugging—the volume of fuel passed when a
safety concerns, if any, associated with its use. It is responsi-
pressure of 105 kPa (15 psi) is reached. This method of report
bility of the user of this standard to establish appropriate safety
is used when less than 300 mL passes at that pressure drop.
and health practices and determine the applicability of regu-
latory limitations prior to use.
4. Summary of Test Method
4.1 Asample of the fuel to be tested is passed at a constant
2. Referenced Documents
rate of flow (20 mL/min) through a glass fiber filter medium.
2
2.1 ASTM Standards:
The pressure drop across the filter is monitored during the
D 396 Specification for Fuel Oils
passageofafixedvolumeoftestfuel.Ifaprescribedmaximum
pressure drop is reached before the total volume of fuel is
1
This test method is under the jurisdiction of ASTM Committee D02 on
filtered, the actual volume of fuel filtered at the time of
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
maximum pressure drop is recorded.
D02.14 on Stability and Cleanliness of Liquid Fuels.
4.2 Calibration of the apparatus is required at intervals, and
Current edition approved Nov. 1, 2004. Published November 2004. Originally
a procedure for the preparation of a fluid for calibration is
approved in 1997. Last previous edition approved in 2003 as D 2068–97(2003).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
described in Annex A1.
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.
*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 ----------------------
D2068–04
FIG. 1 Flow Diagram of Filtration Test Apparatus
5. Significance and Use
5.1 This test method is intended for use in evaluating
FIG. 2 Assembly of Filter Unit
distillate fuel cleanliness in those applications that demand a
high throughput per installed filter.
5.2 A change in filtration performance after storage or
6.4 Forceps, spade ended.
pretreatment can be indicative of changes in fuel condition.
6.5 Stopwatch, manu
...

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1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.2.1 Exceptions—SI units are provided for all parameters except where there is no direct equivalent such as the units for screw threads, National Pipe Threads/diameters, tubing size, or where there is a sole source of supply equipment specification.  
1.2.2 See also A7.1 for clarification; it does not supersede 1.2 and 1.2.1.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Annex A1 for general safety precautions.  
1.4 Table of Contents:    
Section  
Scope  
1  
Referenced Documents  
2  
Terminology  
3  
Summary of Test Method  
4  
Significance and Use  
5  
Apparatus  
6  
Engine Fluids and Cleaning Solvents  
7  
Preparation of Apparatus  
8  
Engine/Stand Calibration and Non-Reference Oil Tests  
9  
Test Procedure  
10  
Calculations, Ratings, and Test Validity  
11  
Report  
12  
Precision and Bias  
13  
Annexes  
Safety Precautions  
Annex A1  
Intake Air Aftercooler  
Annex A2  
The Cummins ISB Engine Build Parts Kit  
Annex A3  
Sensor Locations and Special Hardware  
Annex A4  
External Oil System  
Annex A5  
Cummins Service Publications  
Annex A6  
Specified Units and Formats  
Annex A7  
Oil Analyses  
Annex A8  
Alternate Fuel Approval Process  
Annex A9  
1.5 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.

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