Abstract: An embodiment provides a cuvette apparatus including: a lid and a body, the body including a fluid channel disposed therein; and the lid including at least one opening aligned with a portion of the fluid channel, thereby providing access to the fluid channel in the body. Other aspects are described and claimed.

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 process analyzer for detection of an analyte in a liquid under analysis includes a base module and an exchangeable cartridge module. The exchangeable cartridge module comprises a sample taking device comprising a membrane configured to obtain a sample from the liquid under analysis. A first pump mechanism is configured to pump the sample away from the sample taking device. A second pump mechanism is configured to introduce a reagent into the sample. A measuring section is configured to perform a quantitative detection of the analyte in the sample. A degassing device is arranged downstream of the first pump mechanism and the second pump mechanism. The degassing device is configured to degas the sample.

Abstract: A water analysis device with a pneumatically actuated multi-chamber peristaltic pump includes a base plate comprising a plurality of proximally open pump chambers disposed on a proximal side of the base plate. A pump membrane disposed on the proximal side of the base plate is configured to close the pump chambers. A cover plate is disposed on the pump membrane comprising a respective pneumatic actuator channel in a region of each of the pump chambers. The pneumatic actuator channel is configured to connect to an overpressure source which actuates the pump membrane. A connection channel formed as a groove on a distal side of the base plate is disposed between two of the pump chambers. A separate groove cover is disposed on the distal side of the base plate in a region of the groove. The separate groove cover closes a distal opening side of the groove.

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 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 test kit for the chemical analysis of sample components which are gaseous or convertible into the gas form. The test that has at least two separate regions, of which the first serves for receiving the sample and the second serves for receiving the gases liberated from the sample. The second region containing a gas-sensitive reagent which experiences a change due to contact with the gas generated in the first region; the two regions being separated from one another by a separation element having a mean pore diameter of 0.5 ?m to 1000 ?m (frit).

Abstract: The present invention relates to a method for determining the organically bound carbon (TOC) in an apparatus which has at least one reaction zone (2) and at least one detection zone (3), a) the sample being placed into the reaction zone (2) of the apparatus (1), b) the apparatus being sealed, c) the organically bound carbon being converted into gaseous carbon dioxide by means of physical, chemical, biochemical or microbiological methods, d) the gaseous carbon dioxide being transferred to the detection vessel (3, 3a) and e) the carbon dioxide content being determined by means of measurement methods known per se on the basis of the colour change of the indicator, after step a), the inorganic carbon being converted into carbon dioxide and expelled.