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Development and Implementation of a Test Method for the Investigation of Closed-Transfer-Systems (CTS) On Sprayers

Immenroth, Eckhard, Rautmann, Dirk, von Hörsten, Dieter, Wegener, Jens-Karl, Pohl, Jan-Philip
Gesunde Pflanzen 2019 v.71 no.Supplement 1 pp. 25-31
active ingredients, cleaning, containers, hands, human health, plant protection, risk, risk assessment, sprayers, toxicity
User protection in chemical plant protection is becoming increasingly important due to the health risks posed by plant protection products (PPPs). The contamination of the operator needs to be excluded as far as possible due to high toxicity of the active substances of many plant protection products, in order to enable the licensing of PPPs also in the future. The Federal Institute for Risk Assessment (BfR), which is responsible for human health, assesses a possible hazard to the user as part of the approval process. To assess the safe use of plant protection products, exposure data is required, e. g. for filling sprayers with PPP and cleaning containers. For new filling systems such as Closed Transfer Systems (CTS), which are intended to significantly reduce exposure compared to conventional systems, there are still no reliable exposure data available. Therefore, the Institute for Application Techniques in Plant Protection conducted experiments with the CTS EasyFlow. The system consists of a tank adapter, which is fixed on the sprayer and a container adapter, which can be screwed on the PPP-container. It offers the possibility to ensure a closed and almost contamination-free dosing of the crop protection agents into a sprayer. In a first experiment, the conventional filling via the induction sluice and the manhole shaft has been compared with the filling via the CTS. The results have shown that a reduction in contamination, especially in the area of the hands, can be demonstrated when CTS is used for filling.