Estimation of the concentrated endurances occurring on the outer surface of the sprayers

Abstract

Unsatisfactory technical condition or insufficient adjusting of plant protection machines may cause
considerable environmental pollution. During their maintenance and cleaning (mechanical errors) more or
less concentrated plant protecting chemicals may get into living water and from these even into drink water.
Naturally, during spraying the wind may drift the chemicals into natural waters. In 1999 the International
Standardization Organization has established a working group to elaborate rules to decrease environment
pollution by efficient cleaning of sprayers. As a result of their work, in March 2004 the ISO/DIS 22368
standard draft came into force, which describes in three chapters the inner cleaning of sprayers as well as the
investigation of effectiveness of cleaning devices for outer and inner side of pesticide tank of sprayers. Our
aim was to investigate the effectiveness of the cleaning devices, the contamination quantity and relation of
chemicals on the sprayers and make proposals to improve directions of the standard.