Apparatus for processing or preparing liquid samples for chemical analysis
First Claim
1. An apparatus for processing or preparing liquid samples for chemical analysis, especially for flow injection analysis (FIA), comprising in combinationa plurality of plate components, said plate components each being provided with a central throughhole and several additional throughholes that are distributed across the surface of each plate component,at least one of said components having a horizontally extending channel segment in the form of a groove that extends from said central throughhole towards the periphery of the respective plate component,said plate components being stackable in a predetermined order of arrangement one above the other such that said central throughhole and at least some of the throughholes distributed across each plate component are in alignment with respective throughholes of neighboring components, thus forming at least one interconnected fluid channel system, which extends vertically through the stacked components and includes said horizontally extending channel segment provided in said at least one of said plate components, the channel system being adapted for transportation of a fluid through the stacked plate components;
- and further comprisingat least one integrally formed diaphragm pump, consisting essentially of two of said neighboring plate components which enclose a diaphragm arranged between them, andactivation means for deflecting the diaphragm vertically between a first and second position such that the diaphragm pump sucks or pumps fluid through respective throughholes which are provided in one of said two neighboring plate components located next to one side of said diaphragm, and which communicate with said at least one fluid channel system.
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Accused Products
Abstract
An apparatus (1) for processing or preparing liquid samples for a preferably quantitative chemical analysis, especially for flow-injection analysis, is, for the purpose of miniaturisation and reducing the necessary sample volume while at the same time reducing the analysis time, assembled from a set of plate-like components (8). Each of the components (8) includes channels to form pipe pieces (9) and/or branches (13) with orifices and/or values, for example non-return valves, and/or pumps (6,7) in order to be able to feed the carrier liquid and sample to a detector (3) in the desired manner. Depending on the purpose of the analysis, the components (8) with the pipes and functional parts contained in them may be stacked in varying number and/or sequence and/or angular orientation relative to one another and can be connected in a sealing manner in the operative position.
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Citations
13 Claims
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1. An apparatus for processing or preparing liquid samples for chemical analysis, especially for flow injection analysis (FIA), comprising in combination
a plurality of plate components, said plate components each being provided with a central throughhole and several additional throughholes that are distributed across the surface of each plate component, at least one of said components having a horizontally extending channel segment in the form of a groove that extends from said central throughhole towards the periphery of the respective plate component, said plate components being stackable in a predetermined order of arrangement one above the other such that said central throughhole and at least some of the throughholes distributed across each plate component are in alignment with respective throughholes of neighboring components, thus forming at least one interconnected fluid channel system, which extends vertically through the stacked components and includes said horizontally extending channel segment provided in said at least one of said plate components, the channel system being adapted for transportation of a fluid through the stacked plate components; - and further comprising
at least one integrally formed diaphragm pump, consisting essentially of two of said neighboring plate components which enclose a diaphragm arranged between them, and activation means for deflecting the diaphragm vertically between a first and second position such that the diaphragm pump sucks or pumps fluid through respective throughholes which are provided in one of said two neighboring plate components located next to one side of said diaphragm, and which communicate with said at least one fluid channel system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- and further comprising
Specification