The present disclosure describes an apparatus including a waste compartment, a membrane compartment on the waste compartment, and a wash buffer reservoir on the membrane compartment. The membrane compartment includes a membrane compartment outlet aperture and is configured to hold at least one membrane, and the membrane compartment outlet aperture fluidly connects the membrane compartment and the waste compartment. The wash buffer reservoir comprises a wash buffer reservoir outlet aperture, and the wash buffer reservoir outlet aperture fluidly connects the wash buffer reservoir and the membrane compartment. The apparatus may be used to wash membranes used in analytic techniques, such as membranes for gel electrophoresis.