ASTM D4175-09ae1

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Designation:D4175–09a
Standard Terminology Relating to
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Petroleum, Petroleum Products, and Lubricants
This standard is issued under the fixed designation D4175; 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.
This standard has been approved for use by agencies of the Department of Defense.
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´ NOTE—Terms were transferred editorially in August 2010.
A 5log ~1/T! 5–log T
1. Scope*
10 10
1.1 This terminology standard covers the compilation of where T is the transmittance.
terminology developed by Committee D02 on Petroleum
DISCUSSION—Absorbance expresses the excess absorption over that
Products and Lubricants, except that it does not include
ofaspecifiedreferenceorstandard.Itisimpliedthatcompensationhas
terms/definitions specific only to the standards in which they
been affected for reflectance losses, solvent absorption losses, and
appear.
refractive effects, if present, and that attenuation by scattering is small
1.1.1 The terminology, mostly definitions, is unique to compared with attenuation by absorption. [D02.04] D2008
petroleum,petroleumproducts,lubricants,andcertainproducts
absorptivity, a, n—the specific property of a substance to
from biomass and chemical synthesis. Meanings of the same
absorbradiantpowerperunitsampleconcentrationandpath
termsoutsideofapplicationstopetroleum,petroleumproducts,
length, expressed by:
and lubricants can be found in other compilations and in
a 5 Af/bc
dictionaries of general usage.
1.1.2 The terms/definitions exist in two places: (1) in the
where:
standards in which they appear and (2) in this compilation.
A = the absorbance,
f = the dilution factor,
2. Terminology
b = sample cell path length, and
2.1 Alphabetical listing of terms with definitions for each
c = the quantity of absorbing substance contained in a
term showing attributions as to source and subcommittee
volume of solvent.
jurisdiction is in bold print following the definition. Those
[D02.04] D2008
showingnoattributesareunderthejurisdictionofSubcommit-
acceptance limit (AL), n—a numerical value that defines the
tee CS 95. Some abbreviations, acronyms and symbols are
point between acceptable and unacceptable quality.
included in the list.
DISCUSSION—The AL is not necessarily the specification limit. It is
thevaluethattakesintoaccountthespecificationvalue,thetestmethod
3-MPA, n—3-methylphenylamine [D02.J0] D6812
precision, and the confidence level desired for defining minimum
abrasion, n—wearbydisplacementofmaterialcausedbyhard
acceptable quality relative to the specification value. [D02.94]
particles or hard protuberances. [D02.B0] D4998
D3244
abrasive wear—wear due to hard particles or hard protuber-
ances forced against and moving along a solid surface.
accepted reference value, n—a value that serves as an
[D02.L0] D5182
agreed-upon reference for comparison and that is derived as
absolute filtration rating, n—the diameter of the largest hard
(1) a theoretical or established value, based on scientific
spherical particle that will pass through a filter under
principles, (2) an assigned value, based on experimental
specified test conditions. This is an indication of the largest
work of some national or international organization, such as
opening in the filter element. [D02.N0] D4174
the U.S. National Institute of Standards and Technology
absorbance, A, n—the molecular property of a substance that
(NIST), or (3) a consensus value, based on collaborative
determinesitsabilitytotakeupradiantpower,expressedby:
experimental work under the auspices of a scientific or
engineering group. [D02.01] D6890, [D02.94] D6299,
D6792, [E11] E456, E177
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This terminology is under the jurisdiction of ASTM Committee D02 on
DISCUSSION—In the context of this test method, accepted reference
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
value is understood to apply to the Research octane number of specific
D02.95 on Terminology.
reference materials determined empirically under reproducibility con-
Current edition approved Oct. 1, 2009. Published November 2009. Originally
ditions by the National Exchange Group or another recognized ex-
approved in 1983. Last previous edition approved in 2009 as D4175–09. DOI:
10.1520/D4175-09A. change testing organization. [D02.01] D2699, D2700
*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.
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D4175–09a
DISCUSSION—In the context of this method, accepted reference value be reported in mi
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