The electrophoresis tank is the core part of the gel electrophoresis system, and the rapid development of its system is also mainly reflected in the electrophoresis tank. According to the principle of electrophoresis, gels are placed between two buffer chambers, and the electric field connects the two buffer chambers through the gel. The contact between the buffer and the gel can be either direct liquid contact or indirect through gel strips or filter paper strips. Tubular gel electrophoresis and vertical plate electrophoresis mostly take direct liquid contact. This approach allows for efficient use of the electric field, but there are some difficulties in the design of the device, such as liquid leakage, electrical safety and troublesome operation. Horizontal plate electrophoresis tanks mostly by indirect means, with a filter paper bridge lap
And more recently, the use of buffer made of gel strips and filter paper strips lap, i.e., semi-dry technology, the latter way to make the device is simplified, and the operation is also greatly facilitated.