The Belly Dancer shaker utilizes an undulating motion for use in the multiple stainings and washings involved in gel and blotting techniques. Agitation is gentle and efficient. Combining vertical and horizontal orbital motion allows for rapid exchange of solvents in applications like staining and destaining gels. Blots can be processed in from one to four containers simultaneously. Background is reduced, even with chemiluminescent detection, because there is no limit to the number or duration of washes. All steps of Western blots after primary incubation can be automated.