There are two commonly used types: blow-out type and extrusion type. The blow-out type is composed of a flat-bottomed glass flask and a short blowing pipe and a long water outlet pipe with a bottle mouth device; the squeeze type is composed of a plastic narrow-necked bottle and a bottle mouth device water outlet pipe. The washing bottle is used for quantitative transfer of solution and washing and transfer of precipitation. Economic https://www.rollmed.net/medical-...ray-500ml-hand-wash.html