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ASTM E728-91(2020)

(Test Method)

Standard Test Method for Resistance to Attrition of Granular Carriers and Granular Pesticides

Standard Test Method for Resistance to Attrition of Granular Carriers and Granular Pesticides

SIGNIFICANCE AND USE
4.1 This procedure was designed principally with granular clay, corncob, nut shell, or sand 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 pesticide products.
SCOPE
1.1 This test method is used to determine the resistance to attrition of granular carriers and granular pesticides.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 6.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Oct-2020
ICS
65.100.01 - Pesticides and other agrochemicals in general
Technical Committee
E35 - Pesticides, Antimicrobials, and Alternative Control Agents
Drafting Committee
E35.22 - Pesticide Formulations and Delivery Systems
Current Stage
Ref Project

Relations

Refers
ASTM E11-13 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
Effective Date
01-Oct-2013
Refers
ASTM E11-09e1 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
Effective Date
01-May-2009
Refers
ASTM E725-96(2006) - Standard Test Method for Sampling Granular Carriers and Granular Pesticides
Effective Date
01-Nov-2006
Refers
ASTM E11-04 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
Effective Date
01-May-2004
Refers
ASTM E11-95 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
Effective Date
10-May-2001
Refers
ASTM E11-01 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
Effective Date
10-May-2001
Refers
ASTM E725-96(2001) - Standard Test Method for Sampling Granular Carriers and Granular Pesticides
Effective Date
01-Jan-2001
Refers
ASTM E725-96 - Standard Test Method for Sampling Granular Carriers and Granular Pesticides
Effective Date
01-Jan-2001

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ASTM E728-91(2020) - Standard Test Method for Resistance to Attrition of Granular Carriers and Granular PesticidesASTM E728-91(2020) - Standard Test Method for Resistance to Attrition of Granular Carriers and Granular Pesticides
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ASTM E728-91(2020) - Standard Test Method for Resistance to Attrition of Granular Carriers and Granular Pesticides
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Standards Content (Sample)


This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E728 − 91 (Reapproved 2020)
Standard Test Method for
Resistance to Attrition of Granular Carriers and Granular
Pesticides
This standard is issued under the fixed designation E728; 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 material passing through the specified limiting sieve is mea-
sured and the resistance to attrition calculated.
1.1 This test method is used to determine the resistance to
attrition of granular carriers and granular pesticides.
4. Significance and Use
1.2 The values stated in inch-pound units are to be regarded
4.1 This procedure was designed principally with granular
as standard. The values given in parentheses are mathematical
clay, corncob, nut shell, or sand carriers and granular pesticide
conversions to SI units that are provided for information only
products, but need not be limited to these materials. There may
and are not considered standard.
be more appropriate test methods for other types of granular
1.3 This standard does not purport to address all of the
carriers and pesticide products.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 5. Apparatus
priate safety, health, and environmental practices and deter-
5.1 Brushes, Tyler Model 1778-SB soft brass wire brush, or
mine the applicability of regulatory limitations prior to use.
equivalent, for 100 mesh and coarser sieves.Tyler nylon bristle
For specific hazard statements see Section 6.
brush, or equivalent, for screens finer than 100 mesh.
1.4 This international standard was developed in accor-
5.2 MechanicalSieveShaker,aTylerRo-Tapsieveshaker,or
dance with internationally recognized principles on standard-
equivalent, or other agreed upon device.
ization established in the Decision on Principles for the
5.3 Sieves, U.S. standard sieves, or equivalent conforming
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical to Specification E11. The sieves shall be 2 in. (51 mm) in
height and 8 in. (203 mm) in diameter.
Barriers to Trade (TBT) Committee.
5.4 Bottom Receiver Pan and Top Sieve Cover.
2. Referenced Documents
5.5 Steel Balls, ten ⁄8 in. (16 mm) in diameter.
2.1 ASTM Standards:
5.6 Interval Timer, adjustable, with an accuracy of 610 s.
E11 Specification for Woven Wire Test Sieve Cloth and Test
Sieves
5.7 Balance, sensitivity of 0.1 g.
E725 Test Method for Sampling Granular Carriers and
5.8 Beaker, glass, metal, or plastic with 250-mL capacity.
Granular Pesticides
6. Hazards
3. Summary of Test Method
6.1 Before testing, read the precautionary statements on the
3.1 Aknownweightofpre-sizedgranularcarrierorgranular
product label, the material safety data sheet, or both. Take
pesticide is combined with steel balls in a sieve-bottom
proper precautions to prevent skin contact and inhalation of the
receiver pan. After a specified period of mechanical agitation,
fines and vapors. Take care to prevent contamination of the
the steel balls are removed and the weight of the granular
surrounding area. Always wear the appropriate safety equip-
ment and, where indicated, wear respiratory devices passed by
NIOSH for the product being tested.
This test method is under the jurisdiction of ASTM Committee E35 on
Pesticides, Antimicrobials, and Alternative Control Agentsand is the direct respon-
sibility of Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.
7. Procedure
Current edition approved Nov. 1, 2020. Published November 2020. Originally
7.1 For reproducible results on a comparative basis, it is
approvedin1980.Lastpreviouseditionapprovedin2015asE728 – 91(2015).DOI:
10.1520/E0728-91R20.
nec
...

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