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ASTM E1518-05

(Practice)

Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker Method

Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker Method

SIGNIFICANCE AND USE
This practice is designed for researchers, applicators, and end users of pesticides where one or more ingredients are being mixed into an aqueous spray system. The practice is useful in determining physical compatibility of aqueous spray mixtures of pesticides and/or fertilizers.
The practice is not designed to determine physical compatibility of non-aqueous based spray mixtures.
4.3 THe results or the testing should be used to determine the compatibility of the mixture ingredients in dynamic applications. Interpolation of static results to the expectations of the results of this test is not encouraged.
SCOPE
1.1 This practice describes the method for the evaluation of the physical compatibility and stability of pesticide tank mixtures diluted for aqueous application. This practice may also be adapted to use with liquid fertilizers in replacement of the water diluent.
1.2 Tank mix compatibility can be affected by many variables. Care should be taken to duplicate test conditions. This practice addresses the standard variables such as time, temperature, water hardness, method of agitation, and degree of agitation.
1.3 Compatibility is complex and can be affected by other variables such as order of addition, pH of the dilution water, pumping shear, etc. Under the parameters of this practice, the results will define whether the pesticide mixture is or is not compatible in the laboratory. Compatibility or incompatibility should be confirmed under field spray conditions.
1.4 Proper safety and hygiene precautions must be taken when working with pesticide formulations to prevent skin or eye contact, vapor inhalation, and environmental contamination.
1.5 Read and follow all handling instructions for the specific formulation and conduct the test in accordance with good laboratory practice.
This standard does not purport to address all of the safety problems, 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-Oct-2005
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

Replaces
ASTM E1518-99 - Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker Method
Effective Date
01-Nov-2005
Replaced By
ASTM E1518-05(2012) - Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker Method
Effective Date
01-May-2012

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ASTM E1518-05 - Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker MethodASTM E1518-05 - Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker Method
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ASTM E1518-05 - Standard Practice for Evaluation of Physical Compatibility of Pesticides in Aqueous Tank Mixtures by the Dynamic Shaker Method
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation:E1518–05
Standard Practice for
Evaluation of Physical Compatibility of Pesticides in
1
Aqueous Tank Mixtures by the Dynamic Shaker Method
This standard is issued under the fixed designation E1518; 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 3. Summary of Practice
1.1 This practice describes the method for the evaluation of 3.1 In this practice, pesticides are diluted in water and tank
the physical compatibility and stability of pesticide tank mixed at specific application rates. Evaluations are conducted
mixtures diluted for aqueous application. This practice may under dynamic conditions. Pesticides are mixed and kept under
also be adapted to use with liquid fertilizers in replacement of agitation by a mechanical shaker. Evaluations are conducted at
the water diluent. chosen water hardnesses and temperatures. Compatibility is
1.2 Tank mix compatibility can be affected by many vari- measured in terms of the dispersion stability and screen
ables. Care should be taken to duplicate test conditions. This residue.
practice addresses the standard variables such as time, tem- 3.2 Pesticides being examined for mixing compatibility
perature, water hardness, method of agitation, and degree of should be evaluated individually as controls.
agitation. 3.3 Order of Addition—Pesticides should be tank mixed as
1.3 Compatibility is complex and can be affected by other recommended on the product label. If the order of the addition
variables such as order of addition, pH of the dilution water, is not specified, then all possible orders of addition should be
pumping shear, etc. Under the parameters of this practice, the tested. The following is a general guide: (1) waster soluble
results will define whether the pesticide mixture is or is not concentrates,(2)waterdispersiblegranules(dryflowables),(3)
compatible in the laboratory. Compatibility or incompatibility wettable powders, (4) liquid flowables, and (5) emulsifiable
should be confirmed under field spray conditions. concentrates.
1.4 Proper safety and hygiene precautions must be taken
4. Significance and Use
when working with pesticide formulations to prevent skin or
eye contact, vapor inhalation, and environmental contamina- 4.1 This practice is designed for researchers, applicators,
and end users of pesticides where one or more ingredients are
tion.
being mixed into an aqueous spray system. The practice is
1.5 Readandfollowallhandlinginstructionsforthespecific
formulation and conduct the test in accordance with good useful in determining physical compatibility of aqueous spray
mixtures of pesticides and/or fertilizers.
laboratory practice.
1.6 This standard does not purport to address all of the 4.2 The practice is not designed to determine physical
compatibility of non-aqueous based spray mixtures.
safety problems, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 4.3 THe results or the testing should be used to determine
the compatibility of the mixture ingredients in dynamic appli-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. cations. Interpolation of static results to the expectations of the
results of this test is not encouraged.
2. Referenced Documents
2 5. Apparatus
2.1 ASTM Standards:
5.1 Graduated Cylinder, 100 mL, glass-stoppered.
D1193 Specification for Reagent Water
5.2 Pipets, graduated, wide tip, serological, various delivery
volumes.
5.3 Balance, accurate to 0.1 g.
1
This practice is under the jurisdiction of ASTM Committee E35 on Pesticides
5.4 Sieve, US Standard, 50 mesh (300 microns), 3-in.
and is the direct responsibility of Subcommittee E35.22 on Pesticide Formulation
3
and Application Systems.
diameter.
Current edition approved Nov. 1, 2005 . Published November 2005. Originally
5.5 Wide-Mouth Jars, 4 oz with polyethylene seal cups.
approved in 1993. Last previous edition approved in 1999 as E1508 - 99. DOI:
5.6 Shaker, wrist action, Burrell Model 75 or equivalent.
10.1520/E1518-05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. Other sieve mesh sizes may be used as defined by field-use applications.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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