Abstract Background Quality control of indoor residual spraying (IRS) is necessary to ensure that spray operators (SOs) deposit the correct concentration of insecticide on sprayed structures. while also confirming that spray records are not being falsified. Methods Using high-performance liquid chromatography (HPLC). this study conducted quality control of the organophosphate insectic... https://allfixelectricales.shop/product-category/dryer-door-hinge/