公开(公告)号：US20240003805A1

公开(公告)日：2024-01-04

申请号：US18250847

申请日：2021-10-28

Applicant: HACH LANGE GMBH

Inventor： Andreas Golitz ,  Markus Hahn ,  Andreas Jonak ,  Andreas Schwenk ,  Sebastian Minke ,  Markus Lenhard ,  Bas De Heij ,  Heinz Rudde ,  Maik Heuwold ,  Sven Bergmann

IPC: G01N21/03 ,  G01N21/11 ,  G01N21/78 ,  B01F31/20 ,  B01F31/24

CPC classification number: G01N21/0303 ,  G01N21/11 ,  G01N21/78 ,  B01F31/27 ,  B01F31/24 ,  B01F2215/0454 ,  B01F2101/23

Abstract: Disclosed is a process photometer arrangement (10) with a photometric cuvette unit (20) comprising a cuvette body (24) defining a cuvette cavity (25) and a combined sample inlet/outlet opening (34), a photometer light inlet window (60) and a photometer light outlet window (62). The cuvette body (24) is movably supported by a cuvette body support element (88) and the cuvette unit (20) is provided with a cuvette vibration device (80) for vibrating the cuvette body (24) to thereby quickly and homogenously mix a liquid sample volume (31) within the cuvette cavity (25) without any separate mixing element within the cuvette cavity. This allows a short mixing action within a microfluidic cuvette.

公开(公告)号：US20230304842A1

公开(公告)日：2023-09-28

申请号：US18016887

申请日：2021-07-14

Applicant: HACH LANGE GMBH

Inventor： Andreas Golitz ,  Manfred Battefeld ,  Axel Leyer ,  Sebastian Goertz ,  Michael Kussmann ,  Frank Steinhauer ,  Kathrin Otte ,  Hartmut Dräger

IPC: G01F1/708 ,  G01F1/64 ,  G01N27/10

CPC classification number: G01F1/708 ,  G01F1/64 ,  G01N27/10

Abstract: A flow velocity measurement arrangement (10) for determining the flow velocity of an electrically conductive liquid in a liquid line, comprising an air bubble injector (82) for injecting an air bubble into a liquid flow, a first electrical conductivity measurement cell (30) downstream of the air bubble injector (82) and upstream of a measurement line (40), a second electrical conductivity measurement cell (30′) downstream of the measurement line (40), an evaluation unit (20) which determines the flow velocity of the liquid in the measurement line (40) on the basis of the time-related characteristics of the conductivity measurement results of the two measurement cells (30, 30′).

公开(公告)号：US11714050B2

公开(公告)日：2023-08-01

申请号：US16648669

申请日：2018-08-09

Applicant: HACH LANGE GMBH

Inventor： Andreas Golitz ,  Andreas Jonak ,  Michael Kussmann ,  Axel Leyer ,  Andreas Schwenk ,  Markus Hahn

IPC: G01N21/78 ,  G01N31/22

CPC classification number: G01N21/78 ,  G01N31/22

Abstract: A method for determining a phosphate concentration in a water sample includes providing the water sample, adding a first acid to the water sample to obtain a second water sample in which a concentration of the first acid is at least 0.5 wt.-%, performing a first photometric measurement of the second water sample, adding a coloring component to the second water sample to obtain a third water sample, performing a second photometric measurement of the third water sample, and calculating the phosphate concentration from a difference between the first photometric measurement and the second photometric measurement.

公开(公告)号：US20250020555A1

公开(公告)日：2025-01-16

申请号：US18712883

申请日：2022-11-07

Applicant: HACH LANGE GMBH

Inventor： Andreas Golitz ,  Manfred Battefeld

IPC: G01N1/34

Abstract: The invention refers to a sample preparation arrangement (30) for preparing a water sample for a process water sample analyzer (70), the sample preparation arrangement (30) comprising an immersion filter probe (20) arranged in a water basin (12), the immersion filter probe (20) comprising a sample filter membrane (24), a peristaltic hose sample pump (40) for pumping a water sample from the immersion filter probe (20) to the process water sample analyzer (70), the sample pump (40) comprising a peristaltic pump hose (42) and a pump motor (46) driving a peristaltic pump rotor (44), a water flow sensor arrangement (50) being fluidically arranged in-line with the sample pump (40) and the water sample analyzer (70), a hydrostatic pressure memory (64) for memorizing a static hydraulic pressure (SP) caused by the vertical pump height (H) between the sample pump (40) and the water level surface (14′) in the water basin (12), and a pressure sensor (80) fluidically arranged between the immersion filter probe (20) and the sample pump (40).

公开(公告)号：US20240426743A1

公开(公告)日：2024-12-26

申请号：US18292709

申请日：2021-07-28

Applicant: HACH LANGE GMBH

Inventor： Andreas Golitz ,  Michael Kussmann

IPC: G01N21/03 ,  B01L3/00 ,  G01N21/31

Abstract: An aspect of the present invention relates to a cuvette for a photometric measurement of a sample, the cuvette comprising: a sample container; and at least one photometer. Further aspects of the present invention relate to a method for a photometric measurement of a sample, a system for a photometric analysis of a sample and a method for a photometric analysis of a sample.

公开(公告)号：US10408729B2

公开(公告)日：2019-09-10

申请号：US15527710

申请日：2015-11-19

Applicant: HACH LANGE GMBH

Inventor： Manfred Battefeld ,  Hans-Joachim Kumpch ,  Axel Leyer ,  Bas De Heij ,  Clemens Hanschke ,  Michael Kueppers ,  Andreas Jonak ,  Elk Fricke ,  Heinz Rudde ,  Markus Hahn ,  Markus Lenhard ,  Rolf Uthemann ,  Sebastian Minke ,  Andreas Golitz ,  Bernd Gassner ,  Frank Steinhauer ,  Lothar Heidemanns ,  Andreas Mitreiter

IPC: G01N15/06 ,  G01N21/15 ,  G01N21/51 ,  G01N21/53

Abstract: 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.

公开(公告)号：US10126236B2

公开(公告)日：2018-11-13

申请号：US15806343

申请日：2017-11-08

Applicant: HACH LANGE GMBH

Inventor： Manfred Battefeld ,  Michael Kussmann ,  Bas De Heij ,  Bernd Gassner ,  Frank Steinhauer ,  Hans-Joachim Kumpch ,  Axel Leyer ,  Michael Kueppers ,  Andreas Golitz ,  Andreas Mitreiter ,  Clemens Hanschke ,  Lothar Heidemanns

IPC: G01N21/00 ,  G01N21/15 ,  G01N21/47 ,  G01N21/51 ,  G01N21/94

Abstract: A method for detecting a contamination of a cuvette of a turbidimeter. The turbidimeter includes a light source which emits a light beam directed to a cuvette, a scattering light detector, and a diffuser with a body and an actuator. The actuator moves the body between a parking position and a test position where the body is between the measurement light source and the cuvette, thereby interferes with the light beam, and generates a diffuse test light entering the cuvette. The method includes activating the actuator to move the body from the parking position into the test position, activating the light source, measuring a test light intensity received by the scattering light detector, comparing the test light intensity measured with a reference light intensity, and generating a contamination signal if a difference between a reference light intensity and the test light intensity measured exceeds a first threshold value.

公开(公告)号：US09784669B2

公开(公告)日：2017-10-10

申请号：US14951504

申请日：2015-11-25

Applicant: HACH LANGE GMBH

Inventor： Manfred Battefeld ,  Bas De Heij ,  Hans-Joachim Kumpch ,  Andreas Mitreiter ,  Andreas Golitz

IPC: G01N1/10 ,  G01N21/03 ,  G01N21/51 ,  G01N21/49

CPC classification number: G01N21/0303 ,  G01N21/49 ,  G01N21/51 ,  G01N2021/513 ,  G01N2201/064 ,  G01N2201/068

Abstract: A nephelometric turbidimeter with a cylindrical turbidimeter vial. The cylindrical turbidimeter vial includes a transparent vial body and a circular optical shielding configured to optically block an inside from an outside of the turbidimeter vial. The vial body comprises a transparent and flat bottom inlet window, and a transparent vial cylinder body. The vial cylinder body comprises a circular outlet window. The optical shielding is arranged axially above the outlet window of the vial cylinder body, over a part of an axial length of the vial cylinder body, and axially adjacent to a non-shielded part of the vial cylinder body which serves as the outlet window.

公开(公告)号：US20240408604A1

公开(公告)日：2024-12-12

申请号：US18699039

申请日：2022-09-29

Applicant: HACH LANGE, GMBH

Inventor： Andreas Golitz ,  Michael Kussmann

IPC: B01L9/00

Abstract: The invention relates to an analysis preparation cuvette rack unit (10;10′) comprising a cuvette platform (20) for uprightly holding a sample cuvette (100;101) comprising a cuvette identification (111;111′) on a sample cuvette information carrier (110;110′). The cuvette rack unit (10; 10′) comprises a platform balance for determining the weight of the sample cuvette (100; 101) held by the cuvette platform (20), a reading device (16) for reading the unique cuvette identification (111; 111′) of the sample cuvette information carrier (110; 110′), a sample cuvette information carrier (110; 110′) and a sample cuvette information carrier (110; 110′). cuvette information carrier (110) of the sample cuvette (100;101) held by the cuvette platform (20), and an analysis preparation controller (14;14′) informationally connected to the platform scale (12) and the reading means (16) for storing and transmitting a sample cuvette weight value together with the associated read cuvette identification (111;111′) to a separate remote analysis unit (60) which performs a quantitative analyte analyser (66). The cuvette rack unit (10;10′) does not comprise an analyte analyser.

公开(公告)号：US20230358671A1

公开(公告)日：2023-11-09

申请号：US18044895

申请日：2021-09-01

Applicant: HACH LANGE GMBH

Inventor： Markus Hahn ,  Heinz Rudde ,  Maik Heuwold ,  Markus Lenhard ,  Andreas Golitz ,  Sebastian Minke ,  Andreas Schwenk ,  Andreas Jonak ,  Sven Bergmann ,  Bas De Heij

IPC: G01N21/31 ,  G01N21/78 ,  G01N31/22

CPC classification number: G01N21/314 ,  G01N21/78 ,  G01N31/22

Abstract: A method for the determination of a plausibility of a measurement result of a determination of an ammonium content of an aqueous sample. The method includes providing a blue indole dye mixture of the aqueous sample, determining a first extinction value of the blue indole dye mixture in a first absorption region, determining a second extinction value of the blue indole dye mixture in a second absorption region, dividing the first extinction value by the second extinction value so as to obtain a quotient, and determining the measurement result to not be plausible if the quotient ≥ 1.1.