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COLLECTION AND MEASUREMENT OF SPRAY DROPLETS WITH VISCOUS POLYBUTENE AND AN IMAGE-SPLITTING EYEPIECE1

Published online by Cambridge University Press:  31 May 2012

R. W. Fisher  and
G. P. Dougan
R. W. Fisher
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
G. P. Dougan
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
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Abstract

The droplet range of a water spray is conveniently described by trapping the droplets in a viscous polybutene, measuring their diameters with an image-splitting eyepiece, calculating cumulative percentage volume and cumulative percentage number, plotting both on log–log paper, and noting the mass median and number median diameters. A ratio, MMD/NMD, is suggested as useful for comparing sprays.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 1 , January 1970 , pp. 31 - 35
Copyright
Copyright © Entomological Society of Canada 1970

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References

Edwards, C. J., and Ripper, W. E.. 1953. Droplet size, rates of application and the avoidance of spray drift. Proc. Br. Weed Control Conf., pp. 348–367.Google Scholar
Elliot, K. R. 1952. A new method of assessing aerial spray deposits. Can. Dep. Agric. Sci. Serv., Div. For., Bi-mon. Prog. Rep. 8.Google Scholar
May, K. R. 1945. Sampling methods for sprays and aerosols. J. scient. Instrum. 22: 187–195.CrossRefGoogle Scholar