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Significance and Use
5.2 This test method was validated using Parafilm M3 as a test substrate. It is the user's responsibility for determining the validity of this test method for alternative test surfaces. While it may be generally agreed upon that there is no perfect model for the variety of surfaces for which spreading information would be useful, this test method does not limit users to any one surface. Further consideration must also be given to the potential effect that the liquid droplet may have on the chemical composition and morphology of the test surface. While this does not restrict the test method, an understanding of this potential can help in the interpretation of test data.
5.3 This test method will determine the relative spread of radii of water, fertilizers, oils, and mixtures of these carriers with surfactants. It is the user's responsibility to determine the validity of the test method with alternative liquids.
5.4 This test method will determine the relative spread radii of droplets over 30 s, 60 s, and 5 min. It is the user's responsibility to determine the validity of the test method at alternative spreading times.
5.5 This test method is appropriate for relative humidities within the range of 40 to 70 %. It is the user's responsibility to determine the validity of the test method at alternate relative humidities.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E1519 Terminology Relating to Agricultural Tank Mix Adjuvants
ICS Number Code 65.100.99 (Other pesticides and agrochemicals)
UNSPSC Code 10191500(Pesticides or pest repellents)
ASTM E2044-99(2012), Standard Test Method for Spreading of Liquid Agricultural Spray Mixtures, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top