B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/106
B01D 35/00 (2006.01) C02F 1/00 (2006.01)
Patent
CA 1182758
Improvement in Apparatus for Filtration (Anthony N. Sharpe, PO Box 1224, Almonte, Ont. KOA lAO, Canada) ABSTRACT When filtering fluids the filter means and the receptacles for fluid before and after filtration are commonly individual and must be assembled together in order to perform filtration. The individual items are also commonly rigid, bulky, and require cleaning for re-use. My invention provides a disposable filtration apparatus constructed from a filter means and flexible impermeable film, joined together in such manner as to form fluid receptacles connected internally by the filter. Being preformed, the apparatus requires no assembly by the user. Moreover, by lying flat it occupies negligible space before use and can be dispensed from a roll or stack, yet being flexible it dilates or contracts to accept the sample to be filtered and accomodates the movement of fluid during filtration. One embodiment of the invention employs a filter means capable of retaining undesirable microorganisms and a drinking tube which allows the user to enjoy microbiologically pure water. Chemical or biochemical test reagents may be incorporated into the apparatus so that simple tests requiring filtration and addition of test reagents can be performed automatically. SPECIFICATION The invention is concerned with apparatus for filtration of fluids and of carrying out chemical or biochemical analyses requiring prior filtration of fluids. In one of the commonest laboratory techniques a suspension of solid particles in liquid is separated out by filtration. In its simplest form the filtration is brought about by folding a disk of filter paper into a cone, fitting the cone into a rigid conical filter funnel and inserting this in a flask which is the receiver for the filtrate. More complex apparatus may require elaborately constructed filter means, filter supports, vacuum or pressure pumps and valves. After filtration is complete the apparatus is normally readied for re-use by disassembling it and washing or sterilizing
443000
Na
Sharpe Anthony Nelson
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