SYMPOSIA PAPER Published: 01 January 1989

Testing Methods for Water Dispersible Granules


The water dispersible granule formulation has become a significant form of pesticidal delivery system. With this rise in the production of water dispersible granules, testing has become a priority. This paper outlines the methods used to test the quality of a water dispersible granule prior to field use. The test areas discussed are dispersibility or suspendibility, fertilizer and co-pesticide compatibility and wettability. All these areas contain many test methods by which to evaluate a water dispersible granule. The most popular methods are discussed.

Author Information

Munie, LA
Gorman, WA
Collins, HM
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Developed by Committee: E35
Pages: 151–161
DOI: 10.1520/STP22915S
ISBN-EB: 978-0-8031-5092-8
ISBN-13: 978-0-8031-1450-0