ASTM D5006-10e1
(Test Method)Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels
Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels
SIGNIFICANCE AND USE
DiEGME is miscible with water and can be readily extracted from the fuel by contact with water during shipping and in storage. Methods are therefore needed to check the additive content in the fuel to ensure proper additive concentration in the aircraft.
This test method is applicable to analyses performed in the field or in a laboratory.
SCOPE
1.1 This test method covers a technique for measuring the concentration of Diethylene Glycol Monomethyl Ether (DiEGME) in aviation fuels. A measured volume of fuel, extracted with a fixed ratio of water, is tested with a suitable refractometer to determine the concentration of fuel system icing inhibitor (FSII) in fuel. Precision estimates have been determined for the DiEGME additive using specific extraction ratios with a wide variety of fuel types. The extraction ratios are high enough that portable handheld refractometers can be used, but not so high as to sacrifice accuracy or linearity, or both, in the 0.01 to 0.25 vol % range of interest.
1.2 DiEGME is fully described in Specification D4171 and in other specifications.
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.
General Information
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Standards Content (Sample)
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An American National Standard
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Designation:D5006–10
Standard Test Method for
Measurement of Fuel System Icing Inhibitors (Ether Type) in
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Aviation Fuels
This standard is issued under the fixed designation D5006; 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.
This standard has been approved for use by agencies of the Department of Defense.
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´ NOTE—Minor editorial changes were made throughout in November 2010.
1. Scope 3. Terminology
1.1 This test method covers a technique for measuring the 3.1 Definitions of Terms Specific to This Standard:
concentration of Diethylene Glycol Monomethyl Ether (Di- 3.1.1 analog refractometer, n—a traditional-style refracto-
EGME)inaviationfuels.Ameasuredvolumeoffuel,extracted meter which visually projects a shadowline onto a scale etched
with a fixed ratio of water, is tested with a suitable refracto- into a glass reticle.
meter to determine the concentration of fuel system icing 3.1.1.1 Discussion—The scale, which is magnified by an
inhibitor (FSII) in fuel. Precision estimates have been deter- eyepiece, displays either a direct reading of DiEGME concen-
minedfortheDiEGMEadditiveusingspecificextractionratios tration, as is the case with the analog HB refractometer, or may
with a wide variety of fuel types.The extraction ratios are high display Brix units which must be converted into DiEGME
enough that portable handheld refractometers can be used, but concentration.
not so high as to sacrifice accuracy or linearity, or both, in the 3.1.2 Brix refractometer, n—a refractometer which displays
0.01 to 0.25 vol % range of interest. readings on the Brix scale.
1.2 DiEGME is fully described in Specification D4171 and 3.1.3 Brix scale, n—an expression of the mathematical
in other specifications. relationship between refractive index and the concentration by
1.3 The values stated in SI units are to be regarded as weight of pure sucrose in water.
standard. No other units of measurement are included in this 3.1.4 digital refractometer, n—Arefractometer which relies
standard. on a solid-state image sensor to measure the refractive index of
1.4 This standard does not purport to address all of the a solution, convert the refractive index reading into a particular
safety concerns, if any, associated with its use. It is the unit of measure (percent DiEGME), and outputs the results on
responsibility of the user of this standard to establish appro- a digital display.
priate safety and health practices and determine the applica- 3.2 Acronyms:
bility of regulatory limitations prior to use. 3.2.1 DiEGME—Diethylene Glycol Monomethyl Ether
3.2.2 FSII—fuel system icing inhibitor
2. Referenced Documents
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4. Summary of Test Method
2.1 ASTM Standards:
D4171 Specification for Fuel System Icing Inhibitors 4.1 In order to determine the concentration of DiEGME in
E1 Specification for ASTM Liquid-in-Glass Thermometers aviation fuel, a measured volume of fuel is extracted with a
E29 Practice for Using Significant Digits in Test Data to fixed ratio of water. The extraction procedure includes suffi-
Determine Conformance with Specifications cient agitation and contacting time to ensure that equilibrium
distributions are attained. If using an Analog Refractometer,
place several drops of water extract on the measuring surface,
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This test method is under the jurisdiction of ASTM Committee D02 on point it towards a light source, and take a reading on the
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
internal scale. The analog HB refractometer will display the
D02.J0.04 on Additives and Electrical Properties.
actual percent volume of DiEGME on its scale. Users of a Brix
Current edition approved Aug. 1, 2010. Published August 2010. Originally
refractometer will follow a similar procedure, but will have to
approved in 1989. Last previous edition approved in 2003 as D5006–03. DOI:
10.1520/D5006-10.
convert the Brix reading into DiEGME percent volume. If the
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Brix refractometer is not automatically temperature compen-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
sated, then a temperature correction must first be applied to the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Brix reading before converting it to percent DiEGME. If using
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D5006–10
a Digital Re
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