Comb, Electrophoresis

Description (Brief)
This electrophoresis comb is made from flimsy white plastic and has 20 tines. Scientists at Genentech in the late 1970s made this comb themselves 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 6 5/8 in; 3.175 cm x 16.8275 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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