盐桥是一种常用于原电池实验的装置。制作盐桥时，要求U型管内部不要留有空气泡，否则，会造成胶冻与盐溶液隔绝，致使原电池不能导电。可是，在盐桥制作中，常遇到的麻烦正是难以保证不留有气泡。往往就是小心翼翼地操作，也难免不返工。下面介绍一种巧制盐桥的方法，避免了气 Salt Bridge is a device commonly used in primary battery experiments. Salt bridge production, requiring U-tube inside do not leave air bubbles, otherwise, will result in jelly and salt solution isolated, resulting in the original battery can not be conductive. However, Salt Bridge in the production, the trouble often encountered is difficult to ensure that there is no bubble. Often is carefully operated, it is inevitable not to return to work. The following describes a clever salt bridge approach to avoid the gas