ASTM E2044-99(2012)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E2044 −99 (Reapproved 2012)
Standard Test Method for
Spreading of Liquid Agricultural Spray Mixtures
This standard is issued under the fixed designation E2044; 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 4.2 A20-µLdroplet of the spray mixture is placed carefully
onto a substrate. Under this substrate is a graph with concentric
1.1 This test method covers the visual evaluation of the
rings spaced at 1-mm intervals.
relative spread radius of liquid spray mixture droplets.
4.3 After 60 s, the number of rings that the droplet covers,
1.2 The values stated in SI units are to be regarded as
and thus the radius of the droplet, is observed and recorded.
standard. No other units of measurement are included in this
standard.
5. Significance and Use
1.3 This standard does not purport to address all of the
5.1 This test method is intended to provide a rapid means of
safety concerns, if any, associated with its use. It is the
determining the relative ability of a liquid agricultural spray
responsibility of the user of this standard to establish appro-
mixture to spread on a test substrate.
priate safety and health practices and determine the applica-
5.2 This test method was validated using Parafilm M as a
bility of regulatory limitations prior to use.
test substrate. It is the user’s responsibility for determining the
validity of this test method for alternative test surfaces. While
2. Referenced Documents
it may be generally agreed upon that there is no perfect model
2.1 ASTM Standards:
for the variety of surfaces for which spreading information
E1519 Terminology Relating to Agricultural Tank Mix Ad-
would be useful, this test method does not limit users to any
juvants
one surface. Further consideration must also be given to the
potential effect that the liquid droplet may have on the
3. Terminology
chemical composition and morphology of the test surface.
3.1 Definitions:
While this does not restrict the test method, an understanding
3.1.1 adjuvant, n—a material added to a tank mix to aid or
of this potential can help in the interpretation of test data.
modify the action of an agrochemical, or the physical charac-
5.3 This test method will determine the relative spread of
teristics of the mixture. (See Terminology E1519.)
radii of water, fertilizers, oils, and mixtures of these carriers
3.1.2 spreader, n—a material that increases the area that a
with surfactants. It is the user’s responsibility to determine the
droplet of a given volume of spray mixture will cover on a
validity of the test method with alternative liquids.
target. (See Terminology E1519.)
5.4 This test method will determine the relative spread radii
3.1.3 spread radius, n—the radius in millimetres or some
of droplets over 30 s, 60 s, and 5 min. It is the user’s
other standardized unit, of a substrate covered by a droplet.
responsibility to determine the validity of the test method at
alternative spreading times.
4. Summary of Test Method
5.5 This test method is appropriate for relative humidities
4.1 The material(s) to be tested is mixed using the desired
within the range of 40 to 70 %. It is the user’s responsibility to
concentration of each component.
determine the validity of the test method at alternate relative
humidities.
5.6 This test method is appropriate for temperatures within
This test method is under the jurisdiction of ASTM CommitteeE35 on
the range of 18 to 22°C. It is the user’s responsibility to
Pesticides, Antimicrobials, and Alternative Control Agents and is the direct
responsibility of Subcommittee E35.22 on Pesticide Formulations and Delivery determine the validity of the test method at alternate tempera-
Systems.
tures.
Current edition approved Oct. 1, 2012. Published October 2012. Originally
ε1
approved in 1999. Last previous edition approved in 2006 as E2044 – 99 (2006) .
DOI: 10.1520/E2044-99R12. The sole source of supply of the apparatus (Parafilm M, registered trademark)
For referenced ASTM standards, visit the ASTM website, www.astm.org, or known to the committee at this time isAmerican National Can Company, Chicago,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM IL 60631. If you are aware of alternative suppliers, please provide this information
Standards volume information, refer to the standard’s Document Summary page on to ASTM International Headquarters. Your comments will receive careful consid-
the ASTM website. eration at a meeting of the responsible technical committee, which you may attend.
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E2044−99 (2012)
5.7 This test method will determine the relative spread radii 7.5 Prepare the test mixtures using the desired concentra-
for droplets of 10 and 20 µL. It is the user’s responsibility to tions of each component. Samples should be weighed on a
determine the v
...