Device and process for mixing a sample and a diluent

Details Device and process for mixing a sample and a diluent Device and process for mixing a sample and a diluent

G - Physics

01

N

73/103

G01N 1/10 (2006.01) G01N 1/00 (2006.01) G01N 1/38 (2006.01) G01N 1/28 (2006.01)

Patent

CA 1309880

A B S T R A C T Disclosed is an effective dilution apparatus of simple construction which is easy to manufacture and use. The sample liquid is passed through a non-wetting porous membrane from a reservoir of sample liquid to a flowing stream of diluent which is constantly flowing when the sample liquid penetrates the membrane under positive pressure differential from the sample side of the membrane. The pressure differential can be suitably obtained both by means for exerting pressure on the sample liquids as for example on a stream of sample liquid on the entry side of the membrane as well as a reduction in pressure on the exit side of the membrane. The passage of the sample liquid through the non-wetting porous membrane requires a minimum liquid entry pressure differential across the membrane to cause penetration through the pores and not the material.

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