洗瓶是一种在实验室中用的设备，是一种常用于装水的一种容器，洗瓶顶配有水管型出水口的设备。洗瓶常用的是挤压型，挤压型由塑料洗瓶口的设备由出水管组成。洗瓶常用于溶液的定量转移。

A wash bottle is a squeeze bottle with a nozzle, used to rinse various pieces of laboratory glassware, such as test tubes and round bottom flasks.

Wash bottles are sealed with a screw-top lid. When hand pressure is applied to the bottle, the liquid inside becomes pressurized and is forced out of the nozzle into a narrow stream of liquid.