Testing apparatus comprising an air pump (1) downstream of measuring equipment (2) which measures the characteristics of an inhaler (I). An induction port (3) upstream of the measuring equipment has an adaptor (4) connected at a first end. The adaptor comprises a through-bore extending through the adaptor from the first end to a second end to receive an inhaler (I) and a bypass channel (19) in communication with the through-bore. The invention also includes a testing method and the adapter (4).一種測試裝置,該測試裝置包括位於量測器材(2)之下游的空氣泵(1),該量測器材量測吸入器(I)的特性。感應端(3),該感應端位於該量測器材的上游,該感應端具有連接於第一端點的適配器(4)。該適配器包括通孔,該通孔從該第一端點通過該適配器延伸至第二端點以接收吸入器(I)及與該通孔溝通的分流通道(19)。本發明亦包含測試方法及適配器(4)。1‧‧‧空氣泵2‧‧‧測試器材3‧‧‧感應端4‧‧‧適配器22‧‧‧臂25‧‧‧矽套管I‧‧‧吸入器