Endress+hauser Conducta Gmbh+co. Kg

Xu Zhou

Thilo Krätschmer

Marco Völker

Thomas Schipolowski

Anja Gerlinger

Justyna Homa

Sofia Reim

An analytical device for determining a parameter of a liquid sample, especially a digestion parameter, such as chemical oxygen demand, total carbon content or total nitrogen content, comprising a reactor, and measuring system for ascertaining the parameter of the liquid sample. A container system for storing samples, reagents and waste products in containers, a transport and dosing system for metering and transporting the sample and reagents from the containers into a metering container and for disposal of waste products from the metering container into a waste container, and a measuring transducer for registering a measured parameter correlating, measured value of the liquid sample mixed in the reactor, and measuring, system, in given cases, with one or more reagents is provided. The transport and dosing system is embodied at least of a metering container, a piston pump and an additional sample taking apparatus at least for removal from a sample taking location of a predetermined volume of a liquid as a liquid sample.

Analytical device for determining a digestion parameter of a liquid sample

The present disclosure relates to a method for metering a liquid into a wet chemistry analytical device wherein a specified volume of individual liquids is placed in a metering unit consisting of a metering container and at least one dose measuring device. During the filling of the metering container with the respective liquid, after the activation of the dose measuring device, an additional volume of the liquid is drawn into the metering tube beyond the position of the dose measuring device, wherein during this procedure and afterwards the status of the dose measuring device is checked, and a conclusion is drawn from this regarding the presence of an air bubble-free liquid in the metering tube.

Method for metering a liquid in an analytical device

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Ingersheim, Germany

Xu Zhou