ASTM E2316-03

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Designation: E 2316 – 03
Standard Test Method for
Determination of Particles Resulting from the Attrition of
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.
1. Scope with a drive bed capable of rotating the jar at a known rpm.
After rolling for a specified time period, the jar is removed
1.1 This test method is used to determine the amount and
from the rollers and the contents of the jar are poured through
particle size distribution curve of particles with diameter 10
a sieve sized to remove the glass beads. The sample minus the
micrometers or smaller resulting from the attrition of granular
glass beads is again air jet sieved using 10 micron openings to
pesticides.
remove the fines attrited during the rolling of the jar. The total
1.2 This standard does not purport to address all of the
of particles smaller than 10 microns for the test sample is the
safety concerns, if any, associated with its use. It is the
inherent fines plus the attrited fines. The particle size distribu-
responsibility of the user of this standard to establish appro-
tion curve of the combined inherent and attrited fines is
priate safety and health practices and determine the applica-
determined by laser light diffraction using CIPAC Test Method
bility of regulatory limitations prior to use. For specific hazard
MT 187.
statement, see Section 8.
5. Significance and Use
2. Referenced Documents
5.1 This test method is designed specifically for granular
2.1 ASTM Standards:
pesticide formulations.
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
5.2 This test method helps provide information on health
poses
hazards likely to arise from exposures by the inhalation route.
E 725 Test Method for Sampling Granular Carriers and
It can be of use in selecting dose levels for chronic studies and
Granular Pesticides
for establishing safety criteria for human exposure.
2.2 CIPAC Standard:
5.3 The amount of fines determined by this method is a
CIPAC Test Method MT 187
measure of potential inhalation and respiration toxicity because
3. Terminology
the hazards of inhaled solid substances are influenced by
physical factors such as particle size.
3.1 Definitions:
3.1.1 fines—a synonym for particles with diameter of 10
6. Apparatus
micrometers or smaller.
6.1 Roller System, two or more rollers with a drive bed,
3.1.2 micron and μm—synonyms for micrometer.
capable of rotating the specified glass jar at 75 6 15 rpm.
4. Summary of Test Method
6.2 Glass Jar, with lid, capacity ~500 mL, outer diameter
~8 cm, height ~15 cm.
4.1 The initial weight of a test sample of granular pesticide
6.3 Glass Beads, diameter 4.0 6 0.2 mm, bulk density ~1.5
is determined. The sample is then air jet sieved using 10
g/cc.
micron openings to remove the inherent fines. The fines-free
6.4 Micron Air Jet Sieve, with GAZ 125 cyclone fines
granules are then combined with glass beads in a glass jar, the
collector or Alpine Air Jet Sieve, with GAZ 125 cyclone fines
lid is placed on the jar, and the jar is placed on a roller system
collector, or equivalent.
6.5 Sieves, U.S. standard series conforming to Specification
E 11, diameter 8 in. (203 mm), height 2 in. (51 mm): 10-mesh
This test method is under the jurisdiction of ASTM Committee E35 on 6
(2 mm openings), 140-mesh (10 μm openings).
Pesticides and Alternative Control Agents and is the direct responsibility of
Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.
NOTE 1—The amount of particles with sieve diameter 10 μm or
Current edition approved Oct. 1, 2003. Published November 2003.
smaller is determined by sieving.
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. The Micron Air Jet Sieve and the Alpine Air Jet Sieve use the same principle
3 6
The size distribution of the particles with sieve diameter less than 10 μm is of design and working components. Both are products of Hosokawa Micron
determined by laser light diffraction using CIPAC Test Method MT 187. International of New York. The GAZ 125 cyclone fines collector is an accessory.
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E2316–03
6.6 Balance, sensitivity of 0.01 g. 11.7 Determine to the nearest 0.01 g the weight of the
6.7 Hygrometer, minimum range of 25 to 95 % relative cyclone collection jar plus inherent fines and record the weight
humidity. as J2. Leave the fines in the jar. Reattach the jar to the
6.8 Apparatus specified in CIPAC Test Method MT 187. apparatus.
11.8 Calculate the weight per cent, to the nearest 0.1 %, of
the inherent fines (IF) as determined by the weight of the fines
7. Reagents and Materials
collected in the jar. Use the following formula:
7.1 Granular pesticide to be tested.
% IF 5 @~J2 2 J1! 4 W# 3 100 (1)
7.2 Reagents and materials specified in CIPAC Test Method
MT 187.
11.9 Transfer all the granules (R1) from the 10 μm sieve
into the 500 mL jar. Add an equal weight (6 1 g) of glass
8. Hazards
beads. Place the lid on the jar.
11.10 Place the jar on the roller. Measure the rotational
8.1 Before testing, read the precautionary statements on the
speed of the jar, which must be 75 6 15 rpm. Calculate the
product label and the Material Safety Data Sheet (MSDS).
time period needed for 4500 revolutions, using the following
Take proper precautions to prevent skin contact and inhalation
formula:
of the fines. Take care to prevent contamination of the
surrounding area. Always wear the appropriate safety equip-
Time period 5 4500 4 measured rpm of the jar (2)
ment and, where indicated, wear respiratory devices approved
11.11 Rotate the jar for 4500 6 1
...