Hach Lange Gmbh

Sebastian Minke

Michael Kussmann

Markus Lenhard

Markus Hahn

Andreas Jonak

Heinz Rudde

Manfred Battefeld

Andreas Mitreiter

Hans-Joachim Kumpch

Andreas Golitz

Frank Steinhauer

Axel Leyer

Rolf Uthemann

Lothar Heidemanns

Clemens Hanschke

Bas De Heij

Bernd Gassner

Michael Küppers

Michael Kueppers

Aurelia Stellmach

Andreas Schwenk

Volker Baar

Michael Kussman

Elk Fricke

Sven Bergmann

Maik Heuwold

Michael Kuppers

Eik Fricke

Hans Joachim Kumpch

The invention refers to an optical measurement apparatus () with an optical device () and a liquid sample vessel () for measuring an optical parameter of a liquid sample () in the liquid sample vessel (), comprising a drying circuit circulating drying air for venting the sample vessel (), wherein the drying circuit comprises a mechanical water stop means () in the course of the drying circuit, the water stop means () comprising a conduit body () with a water-absorbing swelling element () arranged within the conduit body (). The water stop means is simple and inexpensive and reliably protects all elements downstream of the water stop means from a water ingress upstream of the water stop means.

Optical measurement apparatus

A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a transparent sample cuvette. The nephelometric turbidimeter includes a cuvette chamber housing with a cuvette chamber having the transparent sample cuvette arranged therein, and a drying apparatus. The drying apparatus includes a cuvette chamber inlet opening which vents the cuvette chamber, a cuvette chamber outlet opening which de-vents the cuvette chamber, an air circulator which circulates air from the cuvette chamber outlet opening to the cuvette chamber inlet opening, and a drying body. The drying body is provided as a container of a hygroscopic agent defined by a drying substance which is arranged in a drying path between the cuvette chamber outlet opening and the cuvette chamber inlet opening so that air flows through the drying body.

Nephelometric turbidimeter and method for controlling the humidity of venting air in a nephelometric turbidimeter

Growing community of inventors

Krefeld, Germany

Sebastian Minke