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
- Technical Committee
- E35 - Pesticides, Antimicrobials, and Alternative Control Agents
- Drafting Committee
- E35.22 - Pesticide Formulations and Delivery Systems
Relations
- Effective Date
- 01-Oct-2013
- 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
- Effective Date
- 01-May-2004
- Effective Date
- 10-May-2001
- Effective Date
- 10-May-2001
- Effective Date
- 01-Jan-2001
- Refers
ASTM E725-96(2001) - Standard Test Method for Sampling Granular Carriers and Granular Pesticides - Effective Date
- 01-Jan-2001
Overview
ASTM E728-91(2020), Standard Test Method for Resistance to Attrition of Granular Carriers and Granular Pesticides, is an internationally recognized standard developed by ASTM International. This test method provides a systematic procedure to determine the resistance to attrition-or breakdown due to mechanical agitation-of granular carriers and granular pesticide products. It is primarily designed for materials such as granular clay, corncob, nut shell, or sand, but can be applied to a wider range of granular materials used in agricultural and environmental applications.
Key Topics
- Attrition Testing: The method evaluates how granular carriers and pesticides resist degradation when subjected to mechanical agitation, simulating handling and transport conditions.
- Applicable Materials: Originally intended for granular clay, corncob, nut shell, and sand carriers, as well as granular pesticide formulations.
- Testing Procedure: Utilizes specialized equipment such as a mechanical sieve shaker, specific sizes of sieves, steel balls, and a balance to measure changes in particle size distribution after agitation.
- Sample Preparation: Involves using a narrow mesh fraction for reproducibility and accurate comparative results.
- Safety and Compliance: Emphasizes the importance of using appropriate safety, health, and environmental precautions. Users should refer to product labels and safety data sheets and comply with all regulatory limitations.
Applications
- Pesticide Formulation Testing: Ensures granular pesticide products can withstand handling during manufacturing, packaging, transport, and use without excessive breakdown and generation of fines.
- Quality Control: Provides manufacturers and quality assurance personnel with a reliable way to compare the physical durability (hardness, attrition resistance) of different granular powders and carrier materials.
- Material Selection: Assists in selecting appropriate granular carriers for pesticides based on attrition resistance, supporting product development and process optimization.
- Regulatory Compliance: Meets internationally recognized principles and facilitates compliance with global trade and regulatory requirements established by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Related Standards
- ASTM E11: Specification for Woven Wire Test Sieve Cloth and Test Sieves - used to ensure accuracy and uniformity in sieving processes.
- ASTM E725: Test Method for Sampling Granular Carriers and Granular Pesticides - outlines procedures for representative sampling for testing purposes.
These related ASTM standards provide essential guidance for accurate and reproducible testing procedures, supporting a consistent approach across laboratories and industries.
Practical Value
- Comparative Assessment: The method is used to generate comparative data on the resistance to attrition among different granular products rather than establishing pass/fail criteria, enabling manufacturers to improve formulations and reduce product loss.
- Operational Efficiency: By understanding attrition resistance, users can minimize dust generation and material loss during processing and application, helping to maintain product integrity and effectiveness.
- Environmental Stewardship: Proper attrition assessment contributes to reducing environmental pollution caused by fines and dust, aligning with best practices for environmental management.
Keywords
ASTM E728, resistance to attrition, granular carriers, granular pesticides, attrition testing, pesticide quality control, material durability, sieve analysis, agricultural standards, international standardization.
Get Certified
Connect with accredited certification bodies for this standard
Control Union Certifications
Global certification for agriculture and sustainability.
ECOCERT
Organic and sustainability certification.
Rainforest Alliance Certification
Sustainable agriculture and forestry certification.
Sponsored listings
Frequently Asked Questions
ASTM E728-91(2020) is a standard published by ASTM International. Its full title is "Standard Test Method for Resistance to Attrition of Granular Carriers and Granular Pesticides". This standard covers: 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.
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.
ASTM E728-91(2020) is classified under the following ICS (International Classification for Standards) categories: 65.100.01 - Pesticides and other agrochemicals in general. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM E728-91(2020) has the following relationships with other standards: It is inter standard links to ASTM E11-13, ASTM E11-09e1, ASTM E725-96(2006), ASTM E11-04, ASTM E11-95, ASTM E11-01, ASTM E725-96, ASTM E725-96(2001). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM E728-91(2020) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...