Hach Lange Gmbh

Hach Company

Rolf Uthemann

Markus Lenhard

Aria Farjam

Isabel Huenig

Rainer Froemel

Andreas Mitreiter

Hans-Joachim Kumpch

Ulrich Lundgreen

Vishnu Vardhanan Rajasekharan

Corey Alan Salzer

Andreas Golitz

Manfred Battefeld

Axel Leyer

Frank Steinhauer

Andreas Jonak

Clemens Hanschke

John Robert Woodward

Lothar Heidemanns

Markus Hahn

Bas De Heij

Heinz Rudde

Bernd Gassner

Michael Kueppers

Michael Küppers

Sebastian Minke

Elk Fricke

Rainer Frömel

Isabel Hünig

Kai Berggold

Michael Kuppers

Eik Fricke

Hans Joachim Kumpch

The invention refers to a microfluidic process water analyzer () comprising an analyzer sample inlet (), an optical sensor unit () for determination of an optical parameter of a liquid sample, a reagent tank () being arranged fluidically upstream of the optical sensor unit () and comprising a liquid reagent (), a waste tank () arranged fluidically downstream of the optical sensor unit (), an evaporation arrangement () comprising an evaporation chamber () arranged fluidically downstream of the optical sensor unit (), the evaporation chamber () being actively vented with a drying gas pumped from a gas source () to the evaporation chamber (). The evaporation arrangement allows to significantly reduce the volume of waste liquid.

Microfluidic process water analyzer

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

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.

Test-element for a mobile water analysis arrangement

A basic unit for a mobile water analyzing system includes a photometer comprising a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam, a test element receptacle configured to allow a test element to be inserted therein, and a photometric measuring track arranged between the light source and the light detector. The measurement beam is coincident with the photometric measuring track during a photometric measurement, and not in a cross direction thereto.

Method for determining an analyte in a water sample by means of a mobile water analysis arrangement

Described is a lab-on-a-chip device and a method of employing a lab-on-a-chip device for determining the concentration of species present in the water.

Lab-on-a-chip for alkalinity analysis

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.

Basic unit and test element for a mobile water analysis arrangement

Described is a lab-on-a-chip device and a method employing a lab-on-a-chip device for determining the concentration of species present in water.

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.

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.

Mobile water analysis arrangement and method for determining an analyte in a water sample

A wastewater analysis sensor cartridge () according to the invention is intended to be used only once. It has a liquid-tight housing (), which contains at least one electrochemical sensor element () and at least one reference element (). Furthermore, the housing () contains a sensor element electrolyte tank () and a reference element electrolyte tank (). The ion-sensitive membranes () of the sensor elements () and the housing () consist of plastic.

Wastewater analysis sensor cartridge

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Leverkusen, Germany

Rolf Uthemann