Measuring device and method for quantitative chemical analysis
AssigneeSAFECHEM Europe GmbH
InventorsSebastian HILL, Dieter LUKOWSKI
Life of this patent
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Abstract
A measuring device for quantitative chemical analysis uses a conveying unit connected to a sample container, a measuring container, and at least one reagent container via a multiple valve. A reagent is conveyed by the conveying unit from the reagent container into the measuring container, which contains a sample. A sensor that detects a transition point is attached to the measuring container. The device can also be connected to a waste container. One method of using this device involves drawing the sample, adding it to the measuring container, and measuring the transition point.
Claims19
A measuring device for quantitative chemical analysis, comprising a conveying unit (2) which is materially connected to at least one sample container (5) for receiving a sample (7), at least one reagent container (14) with a reagent (8), and a measuring container (4), wherein the measuring container (4) is assigned at least one sensor (11) for detecting a transition point of a chemical reaction between the sample (7) and the reagent (8), wherein the sensor is data-connected to an evaluation unit for evaluating the measurement signals of the at least one sensor (11), wherein the conveying unit (2) is assigned an intermediate storage device, and the conveying unit (2) can be alternately connected to the sample container (5), the measuring container (4), and the at least one reagent container (14) via a multiple valve (6),
- wherein the at least one sensor (11) is a color sensor, preferably an RGB sensor, wherein the sample container (5) is materially connected to the conveying unit (2) via a measuring chamber (13), wherein an image generator, in particular an RGB camera (10) and/or a near-infrared sensor for optically testing the sample (7), is assigned to the measuring chamber (13).
A method for quantitative chemical analysis, wherein a sample (7) from a sample container (5) and a reagent (8) from at least one reagent container (14) are conveyed by a conveying unit (2) into a measuring container (4) and mixed there up to a transition point, so that an emulsion is formed, which is analyzed with at least one sensor (11) assigned to the measuring container (4) for detecting a transition point of a chemical reaction, wherein the at least one sensor (11) is data-connected to an evaluation unit (9) for evaluating the measurement signals, wherein the conveying unit (2) is assigned an intermediate storage device, on which a multiple valve (6) is arranged, by means of which a material connection can be established alternately between the conveying unit (2) and the sample container (5), the measuring container (4), and the reagent container (14),
- wherein the at least one sensor (11) measures the color of the emulsion by a color sensor, preferably by an RGB sensor, wherein the sample container (5) is materially connected to the conveying unit (2) via a measuring chamber (13) and an image generator is assigned to the measuring chamber (13), in particular an RGB camera (10) and/or a near-infrared sensor, which carries out an optical inspection of the sample (7), wherein the method comprises the following steps:
- connecting the conveying unit (2) to the sample container (5),
- drawing a sample (7) from the sample container (5) into the conveying unit (2),
- connecting the conveying unit (2) to the measuring container (4),
- adding the sample (7) via the conveying unit (2) to the measuring container (4),
- connecting the conveying unit (2) to the at least one reagent container (14),
- drawing a reagent (8) from the reagent container (14) into the conveying unit (2),
- connecting the conveying unit (2) to the measuring container (4),
- adding the reagent (8) from the conveying unit (2) to the measuring container (4), as well as
- analyzing the transition point using the sensor (11), assigned to the measuring container (4), and the evaluation unit (9) connected to the sensor (11).
Dependencies are inferred from the claim text.