Abstract: A test element for a mobile water analyzing system includes a sample line and a key reagent disposed in the sample line. The sample line includes an inlet opening arranged at a first end, a pump port arranged at a second end of the sample line, an inlet section arranged between the inlet opening and the pump port, and a measuring section with at least one window arranged at an end of the measuring section. The inlet opening receives a water sample. The measuring section is arranged between the inlet section and the pump port and is coincident with a sample pathway.

Abstract: A nephelometric turbidimeter vial arrangement includes a vial and a separate vial cap. The vial comprises a transparent cylindrical vial body configured to enclose a vial interior, a bottom inlet window, and a top vial opening configured to be circular. The separate vial cap comprises a light trap cavity. The separate vial cap is configured to close the top vial opening. The light trap cavity comprises an inner surface which comprises a light absorbing surface. The light trap cavity is configured to be open to the vial interior.

Abstract: A basic unit for a mobile water analyzing system includes a photometer, a test element receptacle, a photometric measuring track, and a pump actuator. The photometer comprises a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam. The test element receptacle is configured so as to allow a separate test element comprising a measuring section and a pump port to be inserted into the test element receptacle. The photometric measuring track is defined by the measuring section when the separate test element is inserted into the test element receptacle. The measurement beam and the photometric measuring track are aligned during a photometric measurement so that a photometric measurement occurs along a longitudinal length of each of the photometric measuring track and the measuring section. The pump actuator is cooperatively connected with the pump port.

Abstract: A nephelometric process turbidimeter for measuring a turbidity of a liquid sample includes a transparent sample vial which comprises a sample vial lateral inner surface. A vial head comprises a vial head lateral inner surface. The vial head and the sample vial together define a sample volume of a liquid sample having a shape of a cylinder. A sample inlet opening is arranged at the vial head and comprises an inlet opening axis. A sample outlet opening is arranged at the cylindrical vial head lateral inner surface to be axially closer to the sample vial than to the sample outlet opening. The inlet opening axis is inclined with respect to an inlet cross plane with an inclination angle of 10° to 80°, and is angled with respect to a radius line from a middle of the cylinder to the sample inlet opening with a tangency angle of more than 15°.

Abstract: A method for determining a shape correction value F for a laboratory liquid-analysis cuvette comprising a cuvette body with a circular cross-section for a photometric liquid analysis includes optically measuring an inside diameter d1 or an outside diameter d0 of the cuvette body to obtain a measured cuvette body diameter d1;d0. A shape correction value F is calculated from the measured cuvette body diameter d1;d0. The shape correction value F for the cuvette body is stored.

Abstract: A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette. The nephelometric turbidimeter includes a measurement light source configured to emit an axial parallel light beam directed to the sample cuvette, a scattering light detector arranged to receive a scattered light from the sample cuvette, and a diffuser comprising a diffuser body and a diffuser actuator. The diffuser actuator is configured to move the diffuser body between a parking position in which the diffuser body does not interfere with the axial parallel light beam and a test position where the diffuser body is arranged between the measurement light source and the sample cuvette so that the diffuser body interferes with the axial parallel light beam and generates a diffuse test light entering the sample cuvette.

Abstract: A turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette includes a cuvette receiving device configured to position the sample cuvette in a defined cuvette position, a light source configured to generate a parallel light beam in the sample cuvette, an annular 45° collecting mirror configured to surround the sample cuvette, a scattering body arranged concentric to the annular 45° collecting mirror, a scattering light detector arranged to receive light scattered by the scattering body, and an annular 45° concentration mirror arranged coaxially to the annular 45° collecting mirror and optically opposite to the annular 45° collecting mirror. The annular 45° collecting mirror is arranged concentric to the light beam. The annular 45° concentration mirror is configured to surround the scattering body.

Abstract: A water analysis sensor electrode for determining an analyte in water includes a sensor electrode housing which is configured to be closed. The sensor electrode housing comprises an inner wall and an ion-selective sensor electrode diaphragm arranged at a lower distal end of the sensor electrode housing. An electrolyte solution is in the sensor electrode housing. A measuring electrode is arranged in the sensor electrode housing. A gas bubble is enclosed by the sensor electrode housing. A rigid rod element having a round cross section is arranged in the sensor electrode housing so that a continuous open capillary channel extends over a length of the sensor electrode housing between the rigid rod element and the inner wall.

Abstract: A transport container system for a water analysis sensor cartridge includes a water analysis sensor cartridge configured to be interchangeable. The water analysis sensor cartridge comprises at least two different sensor membranes. A transport container cup comprises, for each of the at least two different sensor membranes, a separate moist chamber. Each separate moist chamber comprises one chamber opening and a specific humectant for each of the at least two different sensor membranes.

Abstract: A water analysis measurement arrangement for determining a concentration of ions and/or ionic compounds in an aqueous medium includes a closed buffer solution housing comprising a pH buffer solution. The closed buffer solution housing is configured to communicate with the aqueous medium via an electrolyte bridge. A reference electrode is arranged in the closed buffer solution housing. An amplifier ground is disposed on a ground electrode and is configured to directly contact the aqueous medium. A high-impedance amplifier comprises a first capacitive element arranged between the reference electrode and the amplifier ground. An AC voltage generator is arranged between the amplifier ground and the ground electrode. A measurement electrode is configured to directly contact the aqueous medium.

Abstract: A method of determining a concentration of nitrate includes mixing an acid with a first mixture comprising an aldehyde, a chloride and at least one of a nitrate sample and distilled water so as to obtain a second mixture. The second mixture is reacted with a phenol so as to develop a color in a third mixture after a reaction time. The concentration of nitrate is determined colorimetrically with the third mixture.

Abstract: A method for determining an analyte in a water sample with a mobile water analyzing system having a basic unit and a test element insertable in the basic unit, the method comprising providing the test element and the basic unit. The test element is inserted into a test element receptacle of the basic unit. The water sample is transported forward from an inlet opening to a measuring section of the test element. A first analyzing of the water sample is performed in the measuring section with an analyzer of the basic unit. The water sample is transported forward from the measuring section to the first reagent section of the test element. The water sample is transported backward from the first reagent section to the measuring section of the test element. A second analyzing of the water sample is performed in the measuring section with the analyzer of the basic unit.

Abstract: A mobile water analyzing system for determining an analyte in a water sample includes a basic unit and a test element configured to be inserted into the basic unit. The test element includes a sample line with an inlet opening configured to receive the water sample, a measuring section forming a measuring track and configured to allow the determination of an analyte, a pump opening, and a key reagent disposed inside the sample line. The basic unit includes a test element receptacle configured to hold the inserted test element, an analyzer with an analyzer measuring track formed by the measuring section, and a pump actuator cooperatively connected with the pump opening.

Abstract: A method for determining a condition indicator of an apparatus includes providing an apparatus configured to measure at least two different technical parameters. A respective parameter value is determined for each of the at least two different technical parameters of the apparatus using at least one sensor configured to determine a respective parameter value for each of the at least two different technical parameters. A respective deviation value of each of the parameter values is determined with respect to an associated respective parameter reference value for each of the technical parameters. A respective deviation relevance value is determined from each of the deviation values using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other. Using an indicator function, a condition indicator is calculated from the determined deviation relevance values.

Abstract: A method for locating an optical identification on a cuvette includes providing a cuvette comprising an axial locating bar with a fixed bar width with a fixed geometric relationship with an identification. A laboratory analyzer is provided comprising a cuvette chamber, a cuvette rotating device, and a digital camera with an axial resolution of more than 10 lines. The digital camera is associated with the cuvette chamber. At least four respective non-adjacent lines of the digital camera are read in. The identification is searched for. If at least three mutually successive read-in lines comprising approximately axially in-line reflection signals of the axial locating bar with the fixed bar width are registered, the cuvette is rotated by an angle corresponding to the fixed geometric relationship so that identification is aligned with the digital camera. The identification is read in by reading out a plurality of adjacent lines of the digital camera.

Abstract: A process analysis unit includes a base module and an exchangeable cartridge module. The base module comprises at least one independent pump drive, and an analyte sensor without a fluidic measuring section. The cartridge module comprises a liquid reservoir tank, a sample taking device, at least one drive-less pump mechanism configured as a peristaltic membrane pump, a fluidic measuring section for the analyte sensor, and a plastic material plate with groove-like microfluidic channels configured to connect the liquid reservoir tank, the at least one drive-less pump mechanism, and a measuring section. The drive-less pump mechanism is driven pneumatically and pumps a liquid from the liquid reservoir tank. When the cartridge module is connected to the base module, the at least one drive-less pump mechanism is connected to and is driven by the at least one independent pump drive, and the fluidic measuring section is connected to the analyte sensor.

Abstract: A method for determining a condition indicator of an apparatus includes providing an apparatus configured to measure at least two different technical parameters. A respective parameter value is determined for each of the at least two different technical parameters of the apparatus using at least one sensor configured to determine a respective parameter value for each of the at least two different technical parameters. A respective deviation value is determined for each of the parameter values with respect to an associated respective parameter reference value for each of the technical parameters. A respective deviation relevance value is determined from each of the deviation values using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other. Using an indicator function, a condition indicator is calculated from the determined deviation relevance values.

Abstract: A maintenance arrangement for an analysis device for maintaining an environment analysis device includes an environment analysis device, a radio station and a mobile service device. The environment analysis device comprises a manual input, a monitor, and a barcode generator configured to generate a barcode comprising a virtual target address for display on the monitor from an input information item. The service device comprises a digital camera configured to read the barcode, a barcode reading module configured to extract the virtual target address from the barcode read by the digital camera, and a radio module configured to establish a radio link to the radio station and to transmit the virtual target address to the radio station. The radio station is configured to connect the service device to a target device comprising a target address.

Abstract: A basic unit for a mobile water analyzing system includes a photometer, a test element receptacle, a photometric measuring track, and a pump actuator. The photometer comprises a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam. The test element receptacle is configured so as to allow a separate test element comprising a measuring section and a pump port to be inserted into the test element receptacle. The photometric measuring track is defined by the measuring section when the separate test element is inserted into the test element receptacle. The measurement beam and the photometric measuring track are aligned during a photometric measurement so that a photometric measurement occurs along a longitudinal length of each of the photometric measuring track and the measuring section. The pump actuator is cooperatively connected with the pump port.

Abstract: A mobile water analyzing system for determining an analyte in a water sample includes a basic unit and a test element configured to be inserted into the basic unit. The test element includes a sample line with an inlet opening configured to receive the water sample, a measuring section forming a measuring track and configured to allow the determination of an analyte, a pump opening, and a key reagent disposed inside the sample line. The basic unit includes a test element receptacle configured to hold the inserted test element, an analyzer with an analyzer measuring track formed by the measuring section, and a pump actuator cooperatively connected with the pump opening.