ASTM D7321-11e1
(Test Method)Standard Test Method for Test Method for Particulate Contamination of Biodiesel B100 Blend Stock Biodiesel Esters and Biodiesel Blends by Laboratory Filtration
Standard Test Method for Test Method for Particulate Contamination of Biodiesel B100 Blend Stock Biodiesel Esters and Biodiesel Blends by Laboratory Filtration
SIGNIFICANCE AND USE
5.1 The mass of particulates present in a fuel is a significant factor, along with the size and nature of the individual particles, in the rapidity with which fuel system filters and other small orifices in fuel systems can become plugged. This test method provides a means of assessing the mass of particulates present in a fuel sample.
5.2 The test method can be used in specifications and purchase documents as a means of controlling particulate contamination levels in the fuels purchased.
SCOPE
1.1 This test method covers the determination of the mass of particulate contamination in B100 biodiesel in accordance with Specification D6751 and BXX blends that are prepared against all No. 1 and No. 2 grade fuels allowed within Specifications D396 and D975.Note 1—Middle distillate fuels with flash points less than 38°C have been ignited by discharges of static electricity when the fuels have been filtered through inadequately bonded or grounded glass fiber filter systems. See Guide D4865 for a more detailed discussion of static electricity formation and discharge.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation: D7321 − 11
StandardTest Method for
Test Method for Particulate Contamination of Biodiesel B100
Blend Stock Biodiesel Esters and Biodiesel Blends by
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Laboratory Filtration
This standard is issued under the fixed designation D7321; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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ε NOTE—Editorial changes were made to Section 8 in July 2013.
1. Scope* D6751Specification for Biodiesel Fuel Blend Stock (B100)
for Middle Distillate Fuels
1.1 Thistestmethodcoversthedeterminationofthemassof
particulatecontaminationinB100biodieselinaccordancewith
3. Terminology
SpecificationD6751andBXXblendsthatarepreparedagainst
all No. 1 and No. 2 grade fuels allowed within Specifications 3.1 Definitions:
D396 and D975.
3.1.1 biodiesel, n—fuel comprised of mono-alkyl esters of
long chain fatty acids derived from vegetable oils or animal
NOTE 1—Middle distillate fuels with flash points less than 38°C have
fats, designated B100.
been ignited by discharges of static electricity when the fuels have been
filtered through inadequately bonded or grounded glass fiber filter
3.1.2 biodiesel blend, BXX, n—blend of biodiesel fuel with
systems. See Guide D4865 for a more detailed discussion of static
petroleum based biodiesel fuel.
electricity formation and discharge.
3.1.3 bond, v—to connect two parts of a system electrically
1.2 The values stated in SI units are to be regarded as
bymeansofaconductivewiretoeliminatevoltagedifferences.
standard. No other units of measurement are included in this
3.1.4 ground, v—to connect electrically with earth.
standard.
1.3 This standard does not purport to address all of the 3.2 Definitions of Terms Specific to This Standard:
safety concerns, if any, associated with its use. It is the
3.2.1 filtered flushing fluids, n—any of three solvents,
responsibility of the user of this standard to establish appro- methanol, propan-2-ol (isopropanol), or 2,2,4-
priate safety and health practices and determine the applica- trimethylpentane, filtered through a nominal 0.45 µm filter.
bility of regulatory limitations prior to use.
3.2.2 test glass fiber filter, n—glass fiber filter used in this
test method.
2. Referenced Documents
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2.1 ASTM Standards:
4. Summary of Test Method
D396Specification for Fuel Oils
4.1 B100 Biodiesel Blend Stock Filtration:
D975Specification for Diesel Fuel Oils
4.1.1 Ameasuredvolumeofabout400mLofbiodieselester
D1193Specification for Reagent Water
(B100) is vacuum filtered through one 0.7 µm glass fiber filter.
D4057Practice for Manual Sampling of Petroleum and
When the contamination is high or of a nature that induces
Petroleum Products
slow filtration rates, two or more filtrations using a fresh test
D4865Guide for Generation and Dissipation of Static Elec-
filter each time may be required to complete filtration in a
tricity in Petroleum Fuel Systems
reasonable time.
4.1.2 Afterthefiltrationhasbeencompleted,thetestfilteris
washed with solvent, dried, and weighed. The particulate
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This test method is under the jurisdiction of ASTM Committee D02 on
contamination level is determined by subtracting the blank
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
D02.14 on Stability and Cleanliness of Liquid Fuels.
filter mass before filtration from the mass gained by the test
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Current edition approved Jan. 1, 2011. Published March 2011. Originally
filter,andisreportedinunitsofg/m oritsequivalentinmg/L.
approved in 2008. Last previous edition approved in 2008 as D7321–08. DOI:
10.1520/D7321-11E01.
4.2 BXX Biodiesel Blend Filtration:
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.1 A measured volume of about 800 mL of biodiesel
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
blend(BXX)isvacuumfilteredthroughone0.7µmglassfiber
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. filter. When the contamination is high or of a nature that
*A Summary of Changes section appears at the end of this standard
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D7321 − 11
induces slow filtration rates, two or more filtrations using a the receiving flask to the tube passing through the rubber
fresh filter each time may be required to complete filtration in stopper in the top of the safety flask.
a reasonable time. 6.1.5 Vacuum System,eitherawateraspiratedoramechani-
4.2.2 Afterthefiltrationhasbeencompleted,thetestfilteris cal vacuum pump may be used if capable of producing a
washed w
...
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