A method of predicting the effect of nozzle erosion from water-wettable insecticides on the discharge rates of nozzles
Lonergan, R.P.; Hall, L.B.
Bulletin of the World Health Organization 19(6): 1073-1083
1958
ISSN/ISBN: 0042-9686 PMID: 20604031 Document Number: 522058
Nozzle erosion can result in a considerable economic loss to a malaria control programme owing to overapplication of insecticides. The factors responsible for increased discharge rate due to nozzle erosion may vary considerably. Consequently, criteria determined for one or two sets of erosion conditions cannot be generally applied. A method has been developed which permits any individual programme to evaluate spray nozzles under the applicable nozzle erosion conditions. This method has the additional advantage of requiring only two discharge rate determinations instead of a series.