Comb, Electrophoresis

Description (Brief)
This white plastic electrophoresis comb has 17 tines. Scientists at Genentech, a biotechnology company, made this comb themselves in the late 1970s by cutting it out of a sheet of plastic.
Electrophoresis combs are used to create the wells in gels for electrophoresis, a technique that uses the electrical charges of molecules to separate them by their length. It is often used to analyze DNA fragments. When a gel is poured, a comb is inserted. After the gel solidifies, the comb is removed, leaving wells for samples.
Currently not on view
Genentech, Inc.
United States: California, South San Francisco
Physical Description
plastic (overall material)
overall: 1 1/4 in x 5 7/16 in; 3.175 cm x 13.81125 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


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