A submerged membrane filter apparatus for microbiological sampling |
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| Authors: | E D F Williams |
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| Institution: | (1) Present address: Department of Microbiology, University of Cape Town, Rondebosch, Cape, South Africa |
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| Abstract: | The sampler is operated by hydrostatic pressure and consists of a stainless steel cylinder to which is attached a membrane filter holder. A glass inlet tube is broken by a messenger and a predetermined volume of water is filtered. Valves protect the membrane from flow-back and release the pressure as the sampler returns to the surface. The sampler works satisfactorily at 15 m and is strong enough to be used down to 6000 m. The filling rate is controlled by a jet behind the filter holder. |
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