Dosing and mixing apparatus for fluid media

Details Dosing and mixing apparatus for fluid media Dosing and mixing apparatus for fluid media

1984-09-21

1988-02-23

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

7386372, 7386373, 436180, 422100, G01N 110

Patent

active

047269324

ABSTRACT:
A dosing and mixing apparatus for fluid media comprising at least one delivery element and one isolating element. These elements are provided with through-flow or transfer passages and dosing chambers suitably mutually arranged for accomodating and isolating a voluminized specimen quantity or measured dose of test specimen as well as for delivering this measured out dose of test specimen to and mixing this dose of test specimen with a measured dose of thinning agent. The dosing and mixing apparatus manifests itself in that at least one channel suitably associated with the dosing chamber is provided in a surface of one of the elements, such as the isolating element at the surface thereof which faces the delivery element. Each such channel communicates with through-flow openings or circulation passages and is traversed by a cleansing fluid wetting the mutually facing and touching surfaces of the individual delivery and isolating elements in the transport path of the dose of test specimen.

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Alperstein et al.; A Gas Sampling and Injection Valve for Vacuum Service; Anal. Chem., vol. 38, No. 2, 1966, pp. 366-367.

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