ASTM E2316-03e1

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Designation:E2316–03
Standard Test Method for
Determination of Particles Resulting from the Attrition of
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Granular Pesticides
This standard is issued under the fixed designation E 2316; 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 (e) indicates an editorial change since the last revision or reapproval.
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e NOTE—Sections 11 and 12 were editorially corrected in July 2004.
1. Scope micron openings to remove the inherent fines. The fines-free
granules are then combined with glass beads in a glass jar, the
1.1 This test method is used to determine the amount and
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lid is placed on the jar, and the jar is placed on a roller system
particle size distribution curve of particles with diameter 10
with a drive bed capable of rotating the jar at a known rpm.
micrometers or smaller resulting from the attrition of granular
After rolling for a specified time period, the jar is removed
pesticides.
from the rollers and the contents of the jar are poured through
1.2 This standard does not purport to address all of the
a sieve sized to remove the glass beads. The sample minus the
safety concerns, if any, associated with its use. It is the
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glass beads is again air jet sieved using 10 micron openings to
responsibility of the user of this standard to establish appro-
remove the fines attrited during the rolling of the jar. The total
priate safety and health practices and determine the applica-
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of particles smaller than 10 microns for the test sample is the
bility of regulatory limitations prior to use. For specific hazard
inherent fines plus the attrited fines. The particle size distribu-
statement, see Section 8.
tion curve of the combined inherent and attrited fines is
2. Referenced Documents
determined by laser light diffraction using CIPAC Test Method
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MT 187.
2.1 ASTM Standards:
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
5. Significance and Use
poses
5.1 This test method is designed specifically for granular
E 725 Test Method for Sampling Granular Carriers and
pesticide formulations.
Granular Pesticides
5.2 This test method helps provide information on health
2.2 CIPAC Standard:
3 hazards likely to arise from exposures by the inhalation route.
CIPAC Test Method MT 187
It can be of use in selecting dose levels for chronic studies and
3. Terminology for establishing safety criteria for human exposure.
5.3 The amount of fines determined by this method is a
3.1 Definitions:
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measureofpotentialinhalationandrespirationtoxicitybecause
3.1.1 fines—a synonym for particles with diameter of 10
the hazards of inhaled solid substances are influenced by
micrometers or smaller.
physical factors such as particle size.
3.1.2 micron and µm—synonyms for micrometer.
6. Apparatus
4. Summary of Test Method
6.1 Roller System, two or more rollers with a drive bed,
4.1 The initial weight of a test sample of granular pesticide
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capable of rotating the specified glass jar at 75 6 15 rpm.
is determined. The sample is then air jet sieved using 10
6.2 Glass Jar, with lid, capacity ~500 mL, outer diameter
~8 cm, height ~15 cm.
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This test method is under the jurisdiction of ASTM Committee E35 on
6.3 Glass Beads, diameter 4.0 6 0.2 mm, bulk density ~1.5
Pesticides and Alternative Control Agents and is the direct responsibility of
g/cc.
Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.
Current edition approved Oct. 1, 2003. Published November 2003.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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The size distribution of the particles with sieve diameter less than 10 µm is
determined by laser light diffraction using CIPAC Test Method MT 187.
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E2316–03
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6.4 Micron Air Jet Sieve, with GAZ 125 cyclone fines 11.5 Place the 10 µm sieve in the air jet manifold of the
collector or Alpine Air Jet Sieve, with GAZ 125 cyclone fines Micron Air Jet Sieve or Alpine Air Jet Sieve. Gently transfer
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collector, or equivalent. the entire test sample to the sieve and put the sieve cover in
6.5 Sieves, U.S. standard series conforming to Specification place. Set the timer for 3 min. Start the vacuum and adjust the
E 11, diameter 8 in. (203 mm), height 2 in. (51 mm): 10-mesh vacuum gauge to read 7 to 9 in. of water (1.7 to 2.4 kPa).
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(2 mm openings), 140-mesh (10 µm openings). During the sieving period, material adhering to the sieve cov
...