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ASTM E2798-11

(Test Method)

Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application

Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application

SIGNIFICANCE AND USE
Pesticide regulations for the minimization of drift during pesticide application often require active ingredient (a.i.) product use under defined droplet size conditions. Spray performance with respect to transport and deposition of droplets and particles at target surfaces and product efficacy for desired applications are also affected by droplet size spectra. The effect of drift reduction adjuvants on droplet size spectra should be understood in this context. The present test method describes standard tests that can be conducted to investigate the performance of pesticide spray drift reduction adjuvants under simulated field use conditions for drift management decisions in the context of the entire spraying process. The measured reduction in driftable fines and shift in spray droplet size distribution can be used to reduce the buffer zones mandated by regulatory agencies.
SCOPE
1.1 This test method is used to characterize the performance of pesticide spray drift reduction adjuvants with respect to spray droplet size spectra, volume of fines, and other use parameters under simulated field ground application conditions. This test method does not include any procedures to evaluate if pump shear degrades the performance of the spray drift reduction adjuvant.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
Note 1—This method uses industry-standard units. The following conversions to SI units are provided for convenience: 1 mph = 1.61 kph; 1 in = 2.54 cm; 1 gal/acre = 9.36 L/hectare.
1.3 This test method 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.

General Information

Status
Historical
Publication Date
31-Dec-2010
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

Replaced By
ASTM E2798-19 - Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application
Effective Date
01-Oct-2019

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ASTM E2798-11 - Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground ApplicationASTM E2798-11 - Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application
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ASTM E2798-11 - Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application
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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: E2798 − 11
Standard Test Method for
Characterization of Performance of Pesticide Spray Drift
1
Reduction Adjuvants for Ground Application
This standard is issued under the fixed designation E2798; 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 Light-Scattering Instruments
E1519 Terminology Relating to Agricultural Tank Mix Ad-
1.1 This test method is used to characterize the performance
juvants
of pesticide spray drift reduction adjuvants with respect to
E1620 Terminology Relating to Liquid Particles andAtomi-
spray droplet size spectra, volume of fines, and other use
zation
parameters under simulated field ground application condi-
E2408 Test Method for Relative Extensional Viscosity of
tions. This test method does not include any procedures to
Agricultural Spray Tank Mixes
evaluate if pump shear degrades the performance of the spray
3
2.2 ASABE Standards:
drift reduction adjuvant.
ASAE S572.1 Spray Nozzle Classification by Droplet
1.2 The values stated in SI units are to be regarded as
Spectra, March 2009
standard. No other units of measurement are included in this 4
2.3 NFPA Standards:
standard.
NFPA 30 Flammable and Combustible Liquids Code
NFPA 33 Standard for Spray Application Using Flammable
NOTE 1—This method uses industry-standard units. The following
conversions to SI units are provided for convenience: 1 mph = 1.61 kph; or Combustible Materials
1 in = 2.54 cm; 1 gal/acre = 9.36 L/hectare.
3. Terminology
1.3 This test method does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1 Definitions for terms used in this test method can be
responsibility of the user of this standard to establish appro- found in Terminologies E456, E609, E1519, and E1620.
priate safety and health practices and determine the applica-
4. Summary of Test Method
bility of regulatory limitations prior to use.
4.1 This test method provides guidelines for the measure-
2. Referenced Documents
ment of parameters pertaining to the performance of drift
2
reduction adjuvants under simulated field ground application
2.1 ASTM Standards:
conditions.The measurements can be made in a wind tunnel or
D3825 Test Method for Dynamic Surface Tension by the
spray chamber. The method describes the preparation,
Fast-Bubble Technique
composition, and test/application conditions for droplet size
E177 Practice for Use of the Terms Precision and Bias in
and spray pattern measurements. Exact selection of application
ASTM Test Methods
conditions, such as nozzle type and tank mix partners, may
E456 Terminology Relating to Quality and Statistics
varyaccordingtointendeduseconditions.Thistestmethodhas
E609 Terminology Relating to Pesticides
not been verified for aerial and orchard airblast pesticide
E799 Practice for Determining Data Criteria and Processing
applications.
for Liquid Drop Size Analysis
E1260 Test Method for Determining Liquid Drop Size
5. Significance and Use
Characteristics in a Spray Using Optical Nonimaging
5.1 Pesticideregulationsfortheminimizationofdriftduring
pesticide application often require active ingredient (a.i.)
1
This test method is under the jurisdiction of ASTM Committee E35 on
product use under defined droplet size conditions. Spray
Pesticides, Antimicrobials, and Alternative Control Agents and is the direct
performance with respect to transport and deposition of drop-
responsibility of Subcommittee E35.22 on Pesticide Formulations and Delivery
Systems. lets and particles at target surfaces and product efficacy for
Current edition approved Jan. 1, 2011. Published February 2011. DOI:10:1520/
E2798–11.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Society of Agricultural and Biological Engineers
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM (ASABE), 2950 Niles Rd., St. Joseph, MI 49085, http://www.asabe.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from National Fire Protection Association (NFPA), 1 Batterymarch
the ASTM website. Park, Quincy, MA 02169-7471, http://www.nfpa.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2798 − 11
desired applications are also affected by droplet size spectra. 6.4 Nozzle and spray application system for ground appli-
The effect of drift reduction adjuvants on droplet size spectra cation platforms.
should be understood in this context. The present test method
7. H
...

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