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Device for analysis
| Details |
Inventors: Vesterberg, Olof;
Assignee:
Primary Examiner: Marcus; Michael S.
Assistant Examiner:
Attorney, Agent or Firm: Stevens, Davis, Miller & Mosher
A device for the determination of at least one substance in a liquid which comprises a reaction compartment containing a reagent for the substance, a measuring compartment for collection of a predetermined volume of a liquid sample and a facility for transport of the liquid sample, collected in the measuring compartment, to the reaction compartment. The measuring compartment and the reaction compartment are connected with each other by a canal so that when the measuring compartment, with the liquid sample therein, is elevated above the reaction compartment, the liquid flows downwardly into the reaction compartment. |
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DETAILED DESCRIPTION An object of the present invention is to make a structurally simple device for analysis, preferably disposable after use, by which it is easy to accurately measure a certain volume (collect) of a solution to be tested, and in which device there is already present in advance, for the user, a certain amount of reagent, which serves to detect and quantify the substance in the solution to be tested.
Detection and quantification can be made by observance of color, light absorption, fluorescence or precipitate formation.
The reaction occurs in a special reaction compartment in the device.
Due to the ease of use, the device may also be used by untrained persons as well as laboratory technicians or specialists.
The device is advantageous since it can result in a saving of manpower and also laboratory facilities.
Thus, with the device, there is no need to arrange for suitable test tubes and pipettes for measuring out solutions to be tested or reagent solutions.
Preparation of the latter as well as cleaning of used equipment is also eliminated with the invention.
These advantages of the invention are particularly appreciated in situations and at places where laboratory facilities are difficult to arrange and yet where it is necessary or desirable to determine or study substances or biological activities.
Especially in such situations and also when dealing with unstable agents, it is very valuable to have the reaction carried out on the spot where the sample is obtained, without the delay and waste of time that would result if the sample had to be transported to another location for analysis.
The invention is also advantageous because it can result in considerable savings for a laboratory in reducing and possible eliminating the costs of administration, educating personnel and preparing and maintaining qualified facilities.
Initially, the device can be used to determine semiquantitative results.
The advantages of the invention are still evident, e.
g.
, in critical situations, a rapidly and readily available result is often needed immediately and is sufficient on an immediate basis, even though the result may be only semiquantitative
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LCD 
