"when this material is used effective ventilation must be provided or an efficient respiratory protection must be worn" in German When this material is used effective ventilation must be provided or an efficient respiratory protection must be worn. Ausreichende Lüftung anwenden oder wirksames Atemschutzgerät tragen. Detailed translations for "when this material is used effective ventilation must be provided or an efficient respiratory protection must be worn" When this material is used effective ventilation must be provided or an efficient respiratory protection must be worn. When this material is used effective ventilation must be provided or an efficient respiratory protection must be worn. Ausreichende Lüftung anwenden oder wirksames Atemschutzgerät tragen.