ASTM E799-03

Standard Practice for Determining Data Criteria and Processing for Liquid Drop Size Analysis

SIGNIFICANCE AND USE
These criteria5 and procedures provide a uniform base for analysis of liquid drop data.
SCOPE
1.1 This practice gives procedures for determining appropriate sample size, size class widths, characteristic drop sizes, and dispersion measure of drop size distribution. The accuracy of and correction procedures for measurements of drops using particular equipment are not part of this practice. Attention is drawn to the types of sampling (spatial, flux-sensitive, or neither) with a note on conversion required (methods not specified). The data are assumed to be counts by drop size. The drop size is assumed to be the diameter of a sphere of equivalent volume.
1.2 The analysis applies to all liquid drop distributions except where specific restrictions are stated.

General Information

• Status: Historical
• Publication Date: 09-May-2003
• Technical Committee: E29 - Particle and Spray Characterization
• Drafting Committee: E29.02 - Non-Sieving Methods

Relations

• Replaces: ASTM E799-92(1998) - Standard Practice for Determining Data Criteria and Processing for Liquid Drop Size Analysis
• Effective Date: 10-May-2003
• Replaced By: ASTM E799-03(2009) - Standard Practice for Determining Data Criteria and Processing for Liquid Drop Size Analysis
• Effective Date: 01-Nov-2009
• Referred By: ASTM E2798-19 - Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application
• Effective Date: 10-May-2003
• Referred By: ASTM E1260-03(2020) - Standard Test Method for Determining Liquid Drop Size Characteristics in a Spray Using Optical Nonimaging Light-Scattering Instruments
• Effective Date: 10-May-2003
• Referred By: ASTM E1617-09(2019) - Standard Practice for Reporting Particle Size Characterization Data
• Effective Date: 10-May-2003
• Referred By: ASTM E2872-14(2019) - Standard Guide for Determining Cross-Section Averaged Characteristics of a Spray Using Laser-Diffraction Instruments in a Wind Tunnel Apparatus
• Effective Date: 10-May-2003
• Referred By: ASTM E1458-12(2022) - Standard Test Method for Calibration Verification of Laser Diffraction Particle Sizing Instruments Using Photomask Reticles
• Effective Date: 10-May-2003
• Referred By: ASTM E1620-97(2022) - Standard Terminology Relating to Liquid Particles and Atomization
• Effective Date: 10-May-2003

Standards Content (Sample)

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.
Designation:E799–03
Standard Practice for Determining
1
Data Criteria and Processing for Liquid Drop Size Analysis
This standard is issued under the fixed designation E799; 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.
1. Scope pling. A spatial set of data is proportional to concentration:
number per unit volume.
1.1 This practice gives procedures for determining appro-
3.1.2 flux-sensitive, adj—describes the observation of mea-
priate sample size, size class widths, characteristic drop sizes,
surement of the traffic of drops through a fixed area during
and dispersion measure of drop size distribution.The accuracy
intervals of time. Examples of flux-sensitive sampling are the
of and correction procedures for measurements of drops using
collection for a period of time on a stationary slide or in a
particular equipment are not part of this practice. Attention is
sampling cell, or the measurement of drops passing through a
drawn to the types of sampling (spatial, flux-sensitive, or
plane (gate) with a shadowing on photodiodes or by using
neither) with a note on conversion required (methods not
capacitance changes.An example that may be characterized as
specified).Thedataareassumedtobecountsbydropsize.The
neither flux-sensitive nor spatial is a collection on a slide
drop size is assumed to be the diameter of a sphere of
movingsothatthereismeasurablesettlingofdropsontheslide
equivalent volume.
in addition to the collection by the motion of the slide through
1.2 The analysis applies to all liquid drop distributions
the swept volume. Optical scattering devices sensing continu-
except where specific restrictions are stated.
ously may be difficult to identify as flux-sensitive, spatial, or
2. Referenced Documents
neither due to instantaneous sampling of the sensors and the
2
measurable accumulation and relaxation time of the sensors.
2.1 ASTM Standards:
For widely spaced particles sampling may resemble temporal
E 1296 Terminology Relating to Liquid Particle Statistics
and for closely spaced particles it may resemble spatial. A
2.2 ISO Standards:
3
flux-sensitivesetofdataisproportionaltofluxdensity:number
13320–1 Particle SizeAnalysis-Laser Diffraction Methods
per (unit area 3unit time).
9276–1 Representation of Results of Particle SizeAnalysis-
3
3.1.3 representative, adj—indicates that sufficient data have
Graphical Representation
been obtained to make the effect of random fluctuations
9272–2 Calculation of Average Particle Sizes/ Diameters
3
acceptably small. For temporal observations this requires
and Moments from Particle Size Distribution
sufficienttimedurationorsufficienttotaloftimedurations.For
3. Terminology
spatial observations this requires a sufficient number of obser-
vations.Aspatialsampleofoneflashphotographisusuallynot
3.1 Definitions of Terms Specific to This Standard:
representative since the drop population distribution fluctuates
3.1.1 spatial, adj—describes the observation or measure-
with time. 1000 such photographs exhibiting no correlation
mentofdropscontainedinavolumeofspaceduringsuchshort
withthefluctuationswouldmostprobablyberepresentative.A
intervals of time that the contents of the volume observed do
temporal sample observed over a total of periods of time that
not change during any single observation. Examples of spatial
is long compared to the time lapse between extreme fluctua-
samplingaresingleflashphotographyorlaserholography.Any
tions would most probably be representative.
sum of such photographs would also constitute spatial sam-
3.1.4 local, adj—indicates observations of a very small part
(volume or area) of a larger region of concern.
1
ThispracticeisunderthejurisdictionofASTMCommitteeE29onParticleand
3.2 Symbols:Symbols—Representative Diameters:
Spray Characterization and is the direct responsibility of Subcommittee E29.02 on
4
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Non-Sieving Methods.
Current edition approved May 10, 2003. Published August 2003. Originally p
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approvedin1981.Lastpreviouseditionapprovedin1998asE799–92(1998).DOI:
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., This notation follows: Mugele, R.A. and Evans, H.D., “Droplet Size Distribu-
4th Floor, New York, NY 10036, http://www.ansi.org. tion in Sprays,” Ind. Engnrg. Chem. Vol 43, No. 6 (1951),
...