Electroelution Chamber

Description (Brief)
This electroelution chamber was used by scientists at Genentech, a biotechnology company, in the late 1970s and early 1980s. Electroelution is a technique for removing proteins and other molecules from the gel matrix of gel electrophoresis.
Sections of the gel containing the desired sample were excised and placed into a piece of dialysis tubing. The tubing was secured to the bottom of the chamber using small clips buried in a layer of modeling clay at the bottom of the chamber. Once tubing was secured, the chamber was filled with a buffer solution. An electric current was run through the chamber, causing molecules of interest to migrate across the dialysis tubing into the buffer, from which they were collected.
The modeling clay was not originally part of the chamber, but was purchased from a toy store and pressed onto the bottom of the chamber by scientists in order to provide a way to secure the clips to the bottom.
Interview with Dan Yansura, Genentech scientist, 12/20/2012
Currently not on view
Genentech, Inc.
United States: California, South San Francisco
Physical Description
metal (overall material)
plastic (overall material)
overall: 4 1/4 in x 11 11/16 in x 4 1/2 in; 10.795 cm x 29.68625 cm x 11.43 cm
ID Number
accession number
catalog number
Credit Line
Gift of Genentech
See more items in
Medicine and Science: Biological Sciences
Science & Mathematics
Biotechnology and Genetics
Data Source
National Museum of American History


Add a comment about this object