A Berkefeld filter[1] is a water filter made of diatomaceous earth (Kieselguhr). It was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co.[2] Berkefeld was the name of the owner of the mine in Hanover, Germany, where the ceramic material was obtained.
The Berkefeld is a good bacterial water filter used in microbiological laboratories, in homes and out in the field.[3][4]
- ^ Definition: Berkefeld filter from Online Medical Dictionary
- ^ "Berkefeld Filter Co (British)" Archived July 4, 2011, at the Wayback Machine, Grace's Guide, accessed 2010-09-22
- ^ Textbook of Microbiology by Prof. C P Baveja, ISBN 81-7855-266-3[page needed]
- ^ Textbook of Microbiology by Ananthanarayan and Panikar, ISBN 81-250-2808-0[page needed]