For quality control of filter paper impregnation or field applications, the content of various insecticide active ingredients and/or piperonyl butoxide (PBO; a synergist) must be determined for scientific studies, such as:
Currently, chemical testing laboratories use individual methods to determine the content of insecticide active ingredient or PBO in filter papers. These methods involve different extraction solvents, internal standards, laboratory glassware, extraction equipment and conditions, chromatographic columns and conditions as well as different calibration procedures. In view of the absence of a common standard operating procedure (SOP) for analysis of insecticide active ingredients and PBO on filter papers, WHO has developed and validated a common analytical method in collaboration with the Walloon Agricultural Research Centre (CRA-W), Gembloux, Belgium. Glass Fiber Filter
This document describes the materials, analytical method and method validation. The analytical method will be useful to:
Plhj-6 Full-Auto Eco Filter Rotary Heat Plating Machine Use of this common analytical method could be extended to other insecticides and pesticides after proper validation and performance verification.