Water filter made of diatomaceous earth (Kieselguhr)
Schematic diagram of a Berkefeld filterBerkefeld field filter
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]
A Berkefeldfilter is a water filter made of diatomaceous earth (Kieselguhr). It was invented in Germany in 1891, and by 1922 was being marketed in the...
after Henry Doulton's ceramic water filter of 1827. It is similar to the Berkefeldfilter in principle. The filter consists of a permeable unglazed porcelain...
engineer, Wilhelm Berkefeld, recognized the ability of the diatomaceous earth to filter and developed tubular filters (known as filter candles) fired from...
disease in the lungs of rabbits after having been filtered through a bacterium-excluding Berkefeldfilter, but other researchers were unable to reproduce...
earth filters like the Berkefeldfilter -do- ••Unglazed porcelain filters like the Chamberland filter -do- •Disk filter or Seitz filter previously used as...
them through Berkefeldfilters, which exclude bacteria. The infectious agent — which caused lung disease in rabbits — passed through the filter, suggesting...
1911, he made a seminal observation that cell-free filtrate (using Berkefeldfilter that separate bacteria and large microbes) of chicken sarcoma could...
Protection from Waterborne Disease Afforded by the Pasteur-Chamberland and BerkefeldFilters". British Medical Journal. 1 (2111): 1471–1472. doi:10.1136/bmj.1...
the intratracheal, subcutaneous and intraperitoneal injection of Berkefeldfiltered material. The chicks developed typical gasping symptoms after various...
Building and Works. Herbert Murray Colyer, Sales Director, British BerkefeldFilters Ltd., Tonbridge, Kent. For services to Export. The Reverend Arthur...
certain filters for removing micro-organisms from water, with special reference to the nordtmeyer-berkefeld and pasteur-chamberland filters". {{cite...
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