ASTM E2316-03(2009)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: E2316 − 03(Reapproved 2009)
Standard Test Method for
Determination of Particles Resulting from the Attrition of
Granular Pesticides
This standard is issued under the fixed designation E2316; 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.
1. Scope 3.1.2 micron and µm— synonyms for micrometer.
1.1 This test method is used to determine the amount and
4. Summary of Test Method
particle size distribution curve of particles with diameter 10
4.1 The initial weight of a test sample of granular pesticide
micrometers or smaller resulting from the attrition of granular
is determined. The sample is then air jet sieved using 10
pesticides.
micron openings to remove the inherent fines. The fines-free
1.2 The values stated in SI units are to be regarded as
granules are then combined with glass beads in a glass jar, the
standard. No other units of measurement are included in this
lid is placed on the jar, and the jar is placed on a roller system
standard.
with a drive bed capable of rotating the jar at a known rpm.
After rolling for a specified time period, the jar is removed
1.3 This standard does not purport to address all of the
from the rollers and the contents of the jar are poured through
safety concerns, if any, associated with its use. It is the
a sieve sized to remove the glass beads. The sample minus the
responsibility of the user of this standard to establish appro-
glass beads is again air jet sieved using 10 micron openings to
priate safety and health practices and determine the applica-
remove the fines attrited during the rolling of the jar. The total
bility of regulatory limitations prior to use. For specific hazard
of particles smaller than 10 microns for the test sample is the
statement, see Section 8.
inherent fines plus the attrited fines. The particle size distribu-
2. Referenced Documents
tion curve of the combined inherent and attrited fines is
determined by laser light diffraction using CIPAC Test Method
2.1 ASTM Standards:
MT 187.
E11 Specification for Woven Wire Test Sieve Cloth and Test
Sieves
5. Significance and Use
E725 Test Method for Sampling Granular Carriers and
5.1 This test method is designed specifically for granular
Granular Pesticides
pesticide formulations.
2.2 CIPAC Standard:
CIPAC Test Method MT 187
5.2 This test method helps provide information on health
hazards likely to arise from exposures by the inhalation route.
3. Terminology
It can be of use in selecting dose levels for chronic studies and
3.1 Definitions:
for establishing safety criteria for human exposure.
3.1.1 fines—a synonym for particles with diameter of 10
5.3 The amount of fines determined by this method is a
micrometers or smaller.
measureofpotentialinhalationandrespirationtoxicitybecause
the hazards of inhaled solid substances are influenced by
This test method is under the jurisdiction of ASTM Committee E35 on
physical factors such as particle size.
Pesticides, Antimicrobials, and Alternative Control Agentsand is the direct respon-
sibility of Subcommittee E35.22 on Pesticide Formulations and Delivery Systems. 6. Apparatus
Current edition approved March 1, 2009. Published March 2009. Originally
ε1
6.1 Roller System, two or more rollers with a drive bed,
approved in 2003. Last previous edition approved in 2003 as E2316 – 03 . DOI:
10.1520/E2316-03R09. capable of rotating the specified glass jar at 75 6 15 rpm.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 Glass Jar,withlid,capacity~500mL,outerdiameter~8
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 cm, height ~15 cm.
the ASTM website.
3 6
6.3 Glass Beads, diameter 4.0 6 0.2 mm, bulk density ~1.5
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. g/cc.
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E2316 − 03 (2009)
6.4 Micron Air Jet Sieve, with GAZ 125 cyclone fines 11.4 Measure and record the relative humidity of the air that
collector or Alpine Air Jet Sieve, with GAZ 125 cyclone fines will come in contact with the granules. In the absence of
collector, or equivalent. humidity controlled air, the air of concern will be the air of the
room in which the tests are performed.
6.5 Sieves, U.S. standard series conforming to Specification
E11, diameter 8 in. (203 mm), height 2 in. (51 mm): 10-mesh
11.5 Place the 10 µm sieve in the air jet manifold of the
(2 mm openings), 140-mesh (10 µm openings).
Micron Air Jet Sieve or Alpine Air Jet Sieve. Gently transfer
NOTE1—Theamountofparticleswithsievediameter10 µmorsmaller
the entire test sample to the sieve and put the sieve cover in
is determined by sieving.
place. Set the timer for 3 min. Start the vacuum and adjust the
6.6 Balance, sensitivity of 0.01 g.
vacuum gauge to read 7 to 9 in. of water (1.7 to 2.4 kPa).
During the sieving period, material adhering to the sieve cover
6.7 Hygrometer, minimum range of 25 to 95 % relative
or sieve sides may be loosened by use of tapping or by use of
humidity.
trace amounts of anti-static compound.
6.8 Apparatus specified in CIPAC Test Method MT 187.
11.6 After sieving, determine to the nearest 0.01 g the
weight of granules retained on the sieve and record the weight
7. Reagents and Materials
as R1 (granules minus inherent fines).
7.1 Granular pesticide to be tested.
11.7 Determine to the nearest 0.01 g the weight of the
7.2 Reagents and materials specified in CIPAC Test Method
cyclone collection jar plus inherent fines and record the weight
MT 187.
as J2. Leave the fines in the jar. Reattach the jar to the
apparatus.
8. Hazards
11.8 Calculate the weight per cent, to the nearest 0.1 %, of
8.1 Before testing, read the precautionary statements on the
the inherent fines (IF) as determined by the weight of the fines
product label and the Material Safety Data Sheet (MSDS).
collected in the jar. Use the following formula:
Take proper precautions to prevent skin contact and inhalation
of the fines. Take care to prevent contamination of the
% IF 5 J2 2 J1 ÷W 310
...