# US 2014/0154138 A1 · Basic unit and test element for a mobile water analysis arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154138 A1 - Document ID: US20140154138A1 - Status: Published application - Kind: A1 - Application number: 14/172,915 - Filed: 2014-02-05 - Published: 2014-06-05 - Earliest claimed: 2008-10-06 - Assignees: Hach Lange GmbH - Inventors: ULRICH LUNDGREEN; Aria Farjam; Rolf Uthemann; Andreas Mitreiter; Isabel Huenig; Markus Lenhard; Rainer Froemel; Hans-Joachim Kumpch - Web page: https://patentgrep.com/patent/US20140154138A1 ## CPC - G01N 33/1893: {using flow cells} - B01L 3/502715: {characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces} - B01L 3/50273: {characterised by the means or forces applied to move the fluids} - G01N 21/31: Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry {(G01N21/72 takes precedence)} - G01N 21/3151: {using two sources of radiation of different wavelengths (G01N21/33 - G01N21/39 take precedence)} - G01N 21/59: Transmissivity (G01N21/25 takes precedence) - G01N 21/78: producing a change of colour - G01N 27/30: Electrodes, e.g. test electrodes; Half-cells (G01N27/414 takes precedence) - G01N 27/4167: {pH (electrodes therefor G01N27/302, G01N27/36)} - G01N 27/4168: {Oxidation-reduction potential, e.g. for chlorination of water (water analysis G01N33/18)} - G01N 33/1886: {using probes, e.g. submersible probes, buoys} - B01L 3/5027: {by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip} - B01L 2300/0645: Electrodes - B01L 2300/0654: Lenses; Optical fibres - B01L 2300/0681: Filter - B01L 2300/0838: Capillaries - B01L 2400/0475: specific mechanical means and fluid pressure - G01N 2201/0245: with insertable-removable part - G01N 2201/061: Sources - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE ## Abstract 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. ## Claims ### Claim 1 A basic unit for a mobile water analyzing system, the basic unit comprising: 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 so as to allow a separate test element comprising a measuring section and a pump port to be inserted into the test element receptacle: a photometric measuring track, the photometric measuring track being 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 being 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; and a pump actuator cooperatively connected with the pump port. ### Claim 2 (depends on 1) The basic unit as recited in claim 1, further comprising at least one contact, wherein the separate test element further comprises at least one contact and at least one electrode which is arranged in the measuring section, wherein the at least one electrode of the separate test element is configured to connect with the photometer via the at least one contact of the basic unit and the at least one contact of the separate test element. ### Claim 3 (depends on 1) The basic unit as recited in claim 1, wherein the separate test element further comprises a sample line, and the photometric measuring track is formed by a longitudinal section of the sample line. ### Claim 4 (depends on 1) The basic unit as recited in claim 1, wherein the basic unit further comprises at least one of a heating element configured to heat the separate test element and a cooling element configured to cool the separate test element. ### Claim 5 A test element for a mobile water analyzing system, the test element comprising: a sample line comprising: an inlet opening disposed at a first end, the inlet opening being configured to receive a water sample, a pump port disposed at a second end of the sample line, an inlet section disposed between the inlet opening and the pump port, and a measuring section comprising at least one window arranged at an end of the measuring section, the measuring section being arranged between the inlet section and the pump port and being coincident with a sample pathway; and a key reagent disposed in the sample line. ### Claim 6 (depends on 5) The test element as recited in claim 5, wherein the sample line is a microfluidic sample line. ### Claim 7 (depends on 5) The test element as recited in claim 5, further comprising a bottom part and a separate cover part, the bottom part and the separate cover part being arranged so as to form the sample line therebetween. ### Claim 8 (depends on 5) The test element as recited in claim 5, further comprising at least one contact, and at least one electrode arranged in the measuring section, wherein the at least one electrode is configured to connect with an analyzer via the at least one contact and via at least one contact of a separate basic unit. ### Claim 9 (depends on 5) The test element as recited in claim 5, wherein the measuring section is formed by a longitudinal section of the sample line. ### Claim 10 (depends on 5) The test element as recited in claim 5, further comprising a pump membrane configured to be controlled by a pump actuator. ### Claim 11 (depends on 10) The test element as recited in claim 10, wherein the pump actuator is a part of a sample pump of a separate basic unit, the sample pump being connected with the pump port. ### Claim 12 (depends on 5) The test element as recited in claim 5, wherein the test element further comprises an auxiliary reagent disposed in the sample line, the auxiliary reagent being disposed between the key reagent and the pump port. ### Claim 13 (depends on 5) The test element as recited in claim 5, wherein test element further comprises an absorption body disposed between the measuring section and the pump port. ### Claim 14 (depends on 5) The test element as recited in claim 5, wherein test element further comprises a sample filter disposed in the inlet section. ### Claim 15 (depends on 5) The test element as recited in claim 5, wherein test element further comprises a hydrophobic stopper capillary disposed in the sample line. ### Claim 16 (depends on 5) The test element as recited in claim 5, wherein test element further comprises a dose capillary disposed in the sample line. ### Claim 17 (depends on 5) The test element as recited in claim 5, wherein test element is prefabricated.