Collecting Flask with Berkefeld Filter and Mantle

Collecting Flask with Berkefeld Filter and Mantle

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Description
A Berkefeld filter is a water filter made of diatomaceous earth (Kieselguhr). The form was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co. Berkefeld was the owner of the mine in Hanover where the ceramic material was obtained.
Ref: Arthur H. Thomas, Laboratory Apparatus and Reagents (Philadelphia, 1921), p. 272.
Location
Currently not on view
Object Name
flask
Physical Description
cotton (cotton plugs material)
glass, ?, transparent (glass bulb material)
rubber (rubber tube material)
Measurements
overall: 11 in x 9 in x 4 1/2 in; 27.94 cm x 22.86 cm x 11.43 cm
ID Number
MG.253100.37
catalog number
253100.37
accession number
253100
Credit Line
Gift of University of Michigan Medical School. Department of Microbiology
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History
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