ASTM E2589-08

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Designation:E2589–08
Standard Terminology Relating to
Nonsieving Methods of Powder Characterization
This standard is issued under the fixed designation E 2589; 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
Particle size distribution, surface area, and other forms of particle analysis have been commonly
adopted methods of verifying compliance with desired particle specifications for some time. Greater
emphasis is now being placed on inter- and intralaboratory correlation of all particle measurement
systems.
To ensure a better understanding of the comparison of testing results from particle measurement
systems, terminology relating to the measurements must be clearly defined and documented so that
both the recipient and generator of the data are in full agreement as to the meaning of the data. Every
effort has been made here to ensure accuracy, precision, and clarity for the terms included in this
terminology document. For Committee E29, this is an ongoing process with new terms being
developed and defined for future inclusion. Suggestions and comments for additions, corrections, and
revisions are welcomed.
1. Scope the principles of the methods, so that differences and similari-
ties in the data can be interpreted in relation to those principles.
1.1 This terminology covers the definitions of terms used in
That understanding can help to avoid disagreements when data
the description and procedures of analysis of particulate
from different characterization methods are compared.
materials not ordinarily analyzed using test sieves. The terms
2.3 The definitions contained in this terminology will aid in
relate directly to the equipment used in analysis, the physical
the interpretation of particle characterization data with respect
forms of the materials to be analyzed, and selected descriptive
to the method(s) used to produce that data.
data reduction and analysis formats.
1.2 Committee E29 on Particle and Spray Characterization
3. Terminology
believes that it is essential to include terms and definitions
explicit to the committee’s scope, regardless of whether the blind pore,n—open pore having only a single connection with
an external surface.
terms appear in existing ASTM standards. Terms that are in
common usage and appear in common-language dictionaries dispersion, n—system consisting of particles distributed in a
solid, liquid, or gas.
are generally not included, unless they have specific meanings
in the context of particle characterization different from the dynamic image analysis, n— particle size and shape analysis
using computer image analysis techniques on
common-language definitions.
instantaneously-capturedstill-frameprojectedimagesofpar-
2. Significance and Use
ticles in motion.
2.1 Interpretation and use of data generated by particle
DISCUSSION—Some instruments use a moving measurement appara-
characterization methods is highly dependent on the definitions
tus on static particles.
of terms describing that data. It is extremely important that
electrical sensing zone analysis , n—particle size analysis in
those terms be defined in precisely the same way both when
which particles suspended in a conductive liquid medium
comparing data from different characterization techniques and
pass through a narrow orifice in an insulating material
even when correlating data from the s
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