DNA琼脂糖凝胶电泳电压120V,电流2mA,正常否?

You can run a DNA agarose gel at 120 V,but the current maybe should be higher than 2 mA with a regular size gel.It will be different if you are running very small gel.You may check whether the running buffer is correctly made.The low current indicates you have low conductive buffer.

琼脂糖跑电泳不用管电流，80-150v都能跑，电压低一点跑得慢，但是条带会好看点，电压高跑的快，但是条带难看。

主要看电压，不看电流，120v可以跑，最多30分钟就够了

恒压时将电流调到最大，恒流时将电压调到最大。
我用100~140均正常，时间大约20min