Standard Test Method for Particle Size Distribution of Granular Carriers and Granular Pesticides

SIGNIFICANCE AND USE
This procedure was designed principally for clay, corncob, nut shell paper, or sand granular carriers and granular pesticide products, but need not be limited to these materials. There may be more appropriate test methods for other types of granular carriers and products.
SCOPE
1.1 This test method is used to determine the particle size distribution of granular carriers and granular pesticides.  
1.2  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  For specific hazard statements, see Section 6.

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Publication Date
31-Oct-2006
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ASTM E726-01(2006) - Standard Test Method for Particle Size Distribution of Granular Carriers and Granular Pesticides
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:E726–01 (Reapproved 2006)
Standard Test Method for
Particle Size Distribution of Granular Carriers and Granular
Pesticides
This standard is issued under the fixed designation E726; 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 There may be more appropriate test methods for other types of
granular carriers and products.
1.1 This test method is used to determine the particle size
distribution of granular carriers and granular pesticides.
5. Apparatus
1.2 This standard does not purport to address all of the
5.1 Brushes; Tyler Part No. 8576 soft brass wire brush, or
safety concerns, if any, associated with its use. It is the
equivalent, for 100 mesh (150 µm) and coarser sieves. Tyler
responsibility of the user of this standard to establish appro-
nylon bristle brush (Part No. 8577), or equivalent, for screens
priate safety and health practices and determine the applica-
finer than 100 mesh.
bility of regulatory limitations prior to use. For specific hazard
5.2 Mechanical Sieve Shaker; a Tyler RoTap sieve shaker,
statements, see Section 6.
or equivalent, or other agreed upon device.
2. Referenced Documents 5.3 Sieves; U.S. standard 8-in. (20.3 cm) diameter sieves,
or equivalent, conforming to Specification E11.
2.1 ASTM Standards:
5.4 Bottom Receiver Pan and Top Sieve Cover.
E11 SpecificationforWovenWireTestSieveClothandTest
5.5 Interval Timer; adjustable, with an accuracy of 610 s.
Sieves
5.6 Balance; sensitivity of 0.1 g.
E725 Test Method for Sampling Granular Carriers and
Granular Pesticides
6. Hazards
3. Summary of Test Method 6.1 Before testing, read the precautionary statements on the
productlabel,andtheMaterialSafetyDataSheet,orboth.Take
3.1 A known weight of the granular carrier or granular
proper precautions to prevent skin contact and inhalation of the
pesticide is placed on the top sieve of a stacked set of U.S.
fines, or the vapors, or both. Take care to prevent contamina-
standard sieves and shaken under standard conditions for a
tion of the surrounding area. Always wear the appropriate
specified period of time. The weight percent of the granules
safety equipment and, where indicated, wear respiratory de-
retained on each sieve and the bottom pan is determined.
vices approved by NIOSH for the product being tested.
4. Significance and Use
7. Procedure
4.1 This procedure was designed principally for clay, corn-
7.1 Clean and stack the specified sieves in order of size with
cob, nut shell paper, or sand granular carriers and granular
the pan on the bottom, and the sieve with the largest mesh on
pesticide products, but need not be limited to these materials.
the top.
7.2 Use a representative sample of approximately 10065g
This test method is under the jurisdiction of ASTM Committee E35 on
as defined in Test Method E725.
Pesticides and Alternative Control Agents and is the direct responsibility of
7.3 Weigh the sample to 60.1 g.
Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.
7.4 Transfer the whole weighed fraction onto t
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