| 词条 | Chamberland filter |
| 释义 |
A Chamberland filter, also known as a Pasteur–Chamberland filter, is a porcelain water filter invented by Charles Chamberland in 1884.[1] It is similar to the Berkefeld filter in principle. DesignThe filter consists of an unglazed porcelain tube that contains a ring of enameled porcelain through which the inflow pipe fits. The core of the porcelain is made up of a metal pipe with holes through which water flows out and is collected. Inflow is pressurized so filtration occurs under force. There are 13 types: L1 to L13. L1 filters have the coarsest pore size while L13 have the finest. UsefulnessThe Pasteur-Chamberland filter is as useful as other ceramic and porcelain filters. It is a good bacterial water filter used mainly as a high volume water filter.[2][3] The filter works more quickly when the water supplied is under pressure. As with other filters of its kind, it cannot filter very small particles like viruses or mycoplasma. It is used in removal of organisms from a fluid culture in order to obtain the bacterial toxins. HistoryThe Chamberland filter was developed by Charles Edouard Chamberland, one of Louis Pasteur’s assistants in Paris. The original intention was to produce filtered water, free of bacteria, for use in Pasteur's experiments.[4] The filter became increasingly known for its ability to filter out bacteria, the smallest living organisms then known. The filter was patented by Chamberland and Pasteur in America and Europe. An American company licensed the name in Ohio. They sold filters to private homes, hotels, restaurants, and the 1893 Chicago World's Columbian Exposition.[4] Use of the Pasteur-Chamberland filter led to the discovery that diphtheria and tetanus toxins, among others, could still cause illness even after filtration. Identification of these toxins contributed to the development of antitoxins to treat such diseases.{{Citation needed|date=September 2018}} It was also discovered that a type of substance, initially known as a "filterable virus", passed through the smallest Pasteur-Chamberland filters, and replicated itself inside living cells. The discovery that biological entities smaller than bacteria existed was important in establishing the field of virology.[4] References1. ^{{cite journal | author = Horzinek MC| title = The birth of virology | journal = Antonie van Leeuwenhoek | year = 1997 | volume = 71 | issue = 1/2 | pages = 15–20 | doi=10.1023/A:1000197505492 | pmid=9049014}} {{DEFAULTSORT:Chamberland Filter}}2. ^Textbook of Microbiology by Prof. C P Baveja, {{ISBN|81-7855-266-3}} 3. ^Textbook of Microbiology by Ananthanarayan and Panikar, {{ISBN|81-250-2808-0}} 4. ^1 2 {{cite journal|last1=Hansen|first1=Bert|title=The Filter of Life|journal=Distillations|date=2015|volume=2|issue=3|page=6-7|url=https://www.sciencehistory.org/distillations/magazine/the-filter-of-life|accessdate=26 March 2018}} 2 : Microbiology equipment|Filters |
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