Apparatus for static membrane filtration
First Claim
1. Apparatus for static membrane filtration, including a cylindrical sample vessel containing a filtration medium and subjected to centrifugal acceleration, the apparatus comprising a plunger mounted in sealed manner in the sample vessel and being movable therein, and an asymmetrical membrane attached to said plunger at an end thereof facing the bottom of the sample vessel, the membrane being adhered to said plunger in sealed manner and having its filtration active side towards the outside, the sample vessel having a sealable opening in the bottom thereof, the mean density of said plunger being greater than the density of the filtration medium, and the length of said plunger in cm being greater or equal to the reciprocal reduced by 1 of the mean plunger density in g/cm3.
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Accused Products
Abstract
An apparatus for static membrane filtration, including a cylindrical sample vessel containing a filtration medium and subjected to centrifugal acceleration. A plunger is mounted in sealed manner in the sample vessel, and is being movable therein. An asymmetrical membrane is attached at the end of the plunger facing the bottom of the sample vessel, with the filtration active side of the membrane facing towards the outside. The bottom of the sample vessel is provided with a sealable opening. The mean density of the plunger is greater than the density of the filtration medium, and the length of the plunger in cm is greater or equal to the reciprocal of the mean plunger density in g/cm3 reduced by 1.
36 Citations
11 Claims
- 1. Apparatus for static membrane filtration, including a cylindrical sample vessel containing a filtration medium and subjected to centrifugal acceleration, the apparatus comprising a plunger mounted in sealed manner in the sample vessel and being movable therein, and an asymmetrical membrane attached to said plunger at an end thereof facing the bottom of the sample vessel, the membrane being adhered to said plunger in sealed manner and having its filtration active side towards the outside, the sample vessel having a sealable opening in the bottom thereof, the mean density of said plunger being greater than the density of the filtration medium, and the length of said plunger in cm being greater or equal to the reciprocal reduced by 1 of the mean plunger density in g/cm3.
Specification