Patent ID: 8500981

Claim:
An electrophoresis apparatus, comprising: a sample separating section for containing a sample separating medium for separating a sample in a horizontal direction, the sample separating section containing the sample separating medium in such a manner that the sample separating medium has an exposed portion at at least one end of a surface of the sample separating medium, the surface being in parallel with the horizontal direction; and medium connecting means for connecting a sample containing medium to the sample separating medium at a connecting region at the exposed portion, the sample containing medium containing a sample a first buffer tank containing at least part of the exposed portion; a second buffer tank being located in such a manner that the sample separating section will be in between the second buffer tank and the exposed portion, the sample separating section having a communicating opening for communicating between the sample separating medium and the second buffer tank; a cap for medium shaping, the cap being detachably provided so as to cover the exposed portion of the sample separating medium in the first buffer tank; and a seal for medium shaping, the seal sealing the communication opening; wherein: the sample separating section has a first engaging section and the cap has a third engaging section, wherein the first engaging section and the third engaging section are configured to engage together, and the first buffer tank has a second engaging section and the cap has a fourth engaging section, wherein the second engaging section and the fourth engaging section are configured to engage together.