There seem to be around only 15 questions now but I guess they'd steadily increase. Somehow I don't know which tag to fit such questions under
I have applied it to What causes the DNA fragments to stop moving in gel electrophoresis? since you lack the privilege. Please go ahead, apply it to other questions, and write a short tag usage and wiki.
Electrophoresis is very much a biological method that many chemists know little about, especially if they are far away from biochemistry/chemical biology. Thus it makes little sense to have such a tag here.