关于胶体电泳实验的资料并不难找到。但是,大多采用较高电压(100V左右)的直流电源,难于实现,且不安全。同时,需较长时间(10—20分钟)才能观察到明显电泳现象,从而影响课堂实验教学效果。我们遵循用低电压(10—15V)在近距离内对少量分散质(胶粒),相对地形成了一个较强电场的原理,能大大加快胶粒移动速度(1～2分钟可观察到明显电泳现象)。现将具体做法介绍如 Information about colloidal electrophoresis experiments is not hard to find. However, a high voltage (about 100V) DC power supply is often used, which is difficult to achieve and is not safe. At the same time, it takes a long time (10-20 minutes) to observe the obvious electrophoresis phenomenon, thus affecting the classroom experiment teaching effect. We follow the principle of using a low voltage (10-15V) in close proximity to a small amount of dispersoids (colloidal particles) to form a relatively strong electric field, which can greatly speed up the movement of the particles (1 to 2 minutes can be observed clearly Electrophoresis phenomenon). Now we will introduce specific practices such as