ASTM E726-01(2015)

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

SIGNIFICANCE AND USE
4.1 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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2015
• ICS: 19.120 - Particle size analysis. Sieving
• Technical Committee: E35 - Pesticides, Antimicrobials, and Alternative Control Agents
• Drafting Committee: E35.22 - Pesticide Formulations and Delivery Systems

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E726 − 01 (Reapproved 2015)
Standard Test Method for
Particle Size Distribution of Granular Carriers and Granular
1
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 The values stated in SI units are to be regarded as
5.1 Brushes; Tyler Part No. 8576 soft brass wire brush, or
standard. No other units of measurement are included in this
equivalent, for 100 mesh (150 µm) and coarser sieves. Tyler
standard.
nylon bristle brush (Part No. 8577), or equivalent, for screens
1.3 This standard does not purport to address all of the
finer than 100 mesh.
safety concerns, if any, associated with its use. It is the
5.2 Mechanical Sieve Shaker; a Tyler RoTap sieve shaker,
responsibility of the user of this standard to establish appro-
or equivalent, or other agreed upon device.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard 5.3 Sieves; U.S. standard 8-in. (20.3 cm) diameter sieves, or
statements, see Section 6. equivalent, conforming to Specification E11.
5.4 Bottom Receiver Pan and Top Sieve Cover.
2. Referenced Documents
5.5 Interval Timer; adjustable, with an accuracy of 610 s.
2
2.1 ASTM Standards:
5.6 Balance; sensitivity of 0.1 g.
E11 Specification for Woven Wire Test Sieve Cloth and Test
Sieves
6. Hazards
E725 Test Method for Sampling Granular Carriers and
Granular Pesticides
6.1 Before testing, read the precautionary statements on the
productlabel,andtheMaterialSafetyDataSheet,orboth.Take
3. Summary of Test Method
proper precautions to prevent skin contact and inhalation of the
3.1 A known weight of the granular carrier or granular
fines, or the vapors, or both. Take care to prevent contamina-
pesticide is placed on the top sieve of a stacked set of U.S. tion of the surrounding area. Always wear the appropriate
standard sieves and shaken under standard conditions for a safety equipment and, where indicated, wear respiratory de-
specified period of time. The weight percent of the granules vices approved by NIOSH for the product being tested.
retained on each sieve and the bottom pan is determined.
7. Procedure
4. Significance and Use
7.1 Clean and stack the specified sieves in order of size with
4.1 This procedure was designed principally for clay,
the pan on the bottom, and the sieve with the largest mesh on
corncob, nut shell, paper, or sand granular carriers and granular
the top.
pesticide products, but need not be limited to these materials.
7.2 Use a representative sample of approximately 10065g
as defined in Test Method E725.
1
This test method is under the jurisdiction of ASTM Committee E35 on
7.3 Weigh the sample to 60.1 g.
Pesticides, Antimicrobials, and Alternative Control Agents and is the direct
7.4 Transfer the whole weighed fraction onto the top sieve,
responsibility of Subcommittee E35.22 on Pesticide Formulations and Delivery
Systems.
cover and
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: E726 − 01 (Reapproved 2011) E726 − 01 (Reapproved 2015)
Standard Test Method for
Particle Size Distribution of Granular Carriers and Granular
1
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
ε NOTE—An editorial change was made to subsection 4.1 in August 2011.
1. Scope
1.1 This test method is used to determine the particle size distribution of granular carriers and granular pesticides.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E725 Test Method for Sampling Granular Carriers and Granular Pesticides
3. Summary of Test Method
3.1 A known weight of the granular carrier or granular pesticide is placed on the top sieve of a stacked set of U.S. standard
sieves and shaken under standard conditions for a specified period of time. The weight percent of the granules retained on each
sieve and the bottom pan is determined.
4. Significance and Use
4.1 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.
5. Apparatus
5.1 Brushes; Tyler Part No. 8576 soft brass wire brush, or equivalent, for 100 mesh (150 μm) and coarser sieves. Tyler nylon
bristle brush (Part No. 8577), or equivalent, for screens finer than 100 mesh.
5.2 Mechanical Sieve Shaker; a Tyler RoTap sieve shaker, or equivalent, or other agreed upon device.
5.3 Sieves; U.S. standard 8-in. (20.3 cm) diameter sieves, or equivalent, conforming to Specification E11.
5.4 Bottom Receiver Pan and Top Sieve Cover.
5.5 Interval Timer; adjustable, with an accuracy of 610 s.
5.6 Balance; sensitivity of 0.1 g.
1
This test method is under the jurisdiction of ASTM Committee E35 on Pesticides, Antimicrobials, and Alternative Control Agents and is the direct responsibility of
Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.
Current edition approved Aug. 1, 2011Oct. 1, 2015. Published August 2011November 2015. Originally approved in 1980. Last previous edition approved in 20062011
ɛ1
as E726 – 01 (2006).(2011) . DOI: 10.1520/E0726-01R11E01.10.1520/E0726-01R15.
2
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.
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1

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E726 − 01 (2015)
6. Hazards
6.1 Before testing, read the precautionary statements on the product label, and the Material Safety Data Sheet, or both. Take
proper precautions to prevent skin contact and inhalation of the fines, or the vapors, or both. Take care to prevent contamination
of the surrounding area. Always wear the appropriate safety equipment and, where indicated, wear respiratory devices approved
by NIOSH for the product being tested.
7. Procedure
7.1 Clean and stack the specified sieves in order of size with the pan on the bottom, and the sieve with the largest mesh on the
top.
7.2 Use a representative sample of approximately 1006 5 g as defined in Test Method E725.
7.3 Weigh the sample to 60.1 g.
7.4 Transfer the whole weighed fraction onto the top sieve, cover and shake for the time given in the product specification or
10 min if time is not specified.
7.5 Remove the sieve assembly from the sieve shaker and, using the brush, quantitatively transfer the granular material on the
top sieve to a tared weighing pan and weigh to the nearest 0.1 g. Record the value as the sieve fraction we
...