Potter precision laboratory spray tower

In this method, a known amount of the insecticide dissolved in a volatile solvent such as acetone is added to a glass jar and then rotated, allowing the insecticide to coat the entire surface while the solvent evaporates. The dose is varied by the amount of solution added to the jar. Another method for testing deposits of insecticide is to apply a spray (solution or suspension) to a Petri dish using a precision sprayer such as the Potter precision laboratory spray tower (Figures 5.1 and 5.2). This device delivers a known volume of spray in a fine mist, which settles on the surface to be treated. In tests with aphids or spider mites, a leaf substrate contained in a Petri dish can be sprayed by the spraying apparatus. 

Figure 5.1 Potter precision laboratory spray tower.

Figure 5.2 Sectional diagram of Potter precision laboratory spray tower. (From Potter, C. and Way, M.J., Precision spraying, in Methods of Testing Chemicals on Insects, Shepard, H.H., Ed., Vol. 1, Burgess Publishing Company, Minneapolis, 1958, p. 154.)...

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See also in sourсe #XX -- [ , ]

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