ASTM International - ASTM E2408-04(2015)

Standard Test Method for Relative Extensional Viscosity of Agricultural Spray Tank Mixes

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Organization: ASTM International
Publication Date: 1 October 2015
Status: active
Page Count: 4
ICS Code (Measurement of volume, mass, density, viscosity): 17.060
significance And Use:

4.1 Extensional viscosity is a measure of the resistance of a liquid to stretching forces, such as those occurring during the disruption of liquid films and the formation of sprays used in... View More

scope:

1.1 This test method covers the determination of the relative extensional viscosity or Screen Factor (SF) of dilute agricultural spray mixes.

1.2 The test can be used for tank mixes containing dissolved, emulsified or dispersed materials, or mixtures.

1.3 Results may be affected by the quality of the water used. Make-up water quality should therefore be specified in the presentation of results.

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. Read and follow all handling instructions for the specific formulation and conduct the test in accordance with good laboratory practice.

Note 1: References to the development of extensional viscosity from dissolved polymers, extensional viscosity effects on the droplet size distribution of sprays, and measurements of screen factor on recirculated spray mixes containing polymers are available.2,3

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 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 and health practices and determine the applicability of regulatory limitations prior to use.

Document History

ASTM E2408-04(2015)
October 1, 2015
Standard Test Method for Relative Extensional Viscosity of Agricultural Spray Tank Mixes
1.1 This test method covers the determination of the relative extensional viscosity or Screen Factor (SF) of dilute agricultural spray mixes. 1.2 The test can be used for tank mixes containing...
October 1, 2009
Standard Test Method for Relative Extensional Viscosity of Agricultural Spray Tank Mixes
1.1 This test method covers the determination of the relative extensional viscosity or Screen Factor (SF) of dilute agricultural spray mixes. 1.2 The test can be used for tank mixes containing...
October 1, 2004
Standard Test Method for Relative Extensional Viscosity of Agricultural Spray Tank Mixes
Extensional viscosity is a measure of the resistance of a liquid to stretching forces, such as those occurring during the disruption of liquid films and the formation of sprays used in agriculture...
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