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公开(公告)号：US20230194522A1
公开(公告)日：2023-06-22
申请号：US18083656
申请日：2022-12-19
Applicant: HACH COMPANY
Inventor： Dan KROLL
IPC: G01N33/569 , G01N33/543 , G01N15/14 , G01N15/06
CPC classification number: G01N33/56911 , G01N33/54326 , G01N15/1404 , G01N15/06 , G01N2015/149 , G01N2015/1493 , G01N2015/0693 , G01N2015/1006
Abstract: Methods and kits are provided for analyzing a fluid with a flow cytometer to determine the concentration of a target component in the fluid. At least two bead groups are combined with the fluid, wherein each of the bead groups includes surface-functionalized beads that have a different size from the other bead groups. The target component can bind to the functional groups on the beads, and the beads with the targets can be counted with the flow cytometer. Based on the numbers of beads with targets in each group, a most probable number (MPN) of the target component can be determined.
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公开(公告)号：US11549888B2
公开(公告)日：2023-01-10
申请号：US16592339
申请日：2019-10-03
Applicant: Hach Company
Inventor： Amit Das
IPC: G01N21/64 , G01N21/77 , G01N33/18 , G01N31/22 , C07D311/16
Abstract: An embodiment provides a method for measuring total chlorine in a seawater sample, including: preparing a thiocarbamate-based indicator; introducing the thiocarbamate-based indicator to a seawater sample, wherein the seawater sample contains an amount of total chlorine; adding an additive to the seawater sample, wherein the additive accelerates the reaction rate between the thiocarbamate-based indicator and total chlorine and causes a change in fluorescence of the seawater sample; and measuring the amount of total chlorine in the seawater sample by measuring an intensity of the fluorescence. Other aspects are described and claimed.
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公开(公告)号：US11549879B2
公开(公告)日：2023-01-10
申请号：US16614898
申请日：2018-05-18
Applicant: HACH COMPANY
Inventor： Cary Burton Jackson , Richard Edward Leggett
Abstract: One embodiment provides a system, including: at least two water analyzers, wherein at least one of the at least two water analyzers is positioned upstream of a purification apparatus and wherein at least another of the at least two water analyzers is positioned downstream of the purification apparatus; at least one processor; and a memory device that stores instructions executable by the processor to: receive water analysis data from the at least two water analyzers, wherein the water analysis data comprises information related to membrane integrity; identify an algorithm for calculating membrane integrity based upon received data corresponding to system attributes; and calculate, using the identified algorithm, the membrane integrity based upon the received water analysis data. Other aspects are described and claimed.
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公开(公告)号：US11506605B2
公开(公告)日：2022-11-22
申请号：US16411855
申请日：2019-05-14
Applicant: Hach Company
Inventor： Amit Das
IPC: G01N21/64 , G01N21/77 , C07D311/16 , C09B57/02
Abstract: An embodiment provides a method for measuring total chlorine in a solution, including: preparing a thiocarbamate indicator; introducing the thiocarbamate indicator to a solution, wherein the solution contains an amount of monochloramine; adding an additive to the solution, wherein the additive accelerates the reaction rate between the thiocarbamate indicator and monochloramine and causes a change in fluorescence of the solution; and measuring the amount of monochloramine in the solution by measuring an intensity of the fluorescence. Other aspects are described and claimed.
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公开(公告)号：US11474071B2
公开(公告)日：2022-10-18
申请号：US17007750
申请日：2020-08-31
Applicant: Hach Company
Inventor： Vishnu Vardhanan Rajasekharan , Corey Alan Salzer
IPC: G01N27/416 , G01N27/30
Abstract: An embodiment provides a method for compensating for inteferants in measurement of alkalinity in a reagent-less system, including: introducing an aqueous sample into a measurement device comprising one or more series of electrodes; applying an electrical signal to the aqueous sample using the one or more series of electrodes, wherein the electrical signal is selected from the group consisting of: current and voltage; identifying, during application of the electrical signal, that the electrical signal reaches an oxidation threshold and measuring, prior to reaching the oxidation threshold, a first electrical response to the electrical signal, the first electrical response attributable to interferants in the aqueous sample; identifying, during application of the electrical signal, that the electrical signal reaches an endpoint and measuring, from the oxidation threshold to the endpoint, a second electrical response to the electrical signal; and measuring an alkalinity of the aqueous sample based upon a difference between the first electrical response and the second electrical response. Other aspects are described and claimed.
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Patent Agency Ranking
公开(公告)号：US20220260599A1
公开(公告)日：2022-08-18
申请号：US17174972
申请日：2021-02-12
Applicant: Hach Company
Inventor： Vishnu Vardhanan Rajasekharan , Cary Burton Jackson , Russell Young
IPC: G01N35/00
Abstract: An embodiment provides a method for real-time management of analyte recovery within a system for measuring at least one parameter of a fluid within the system by monitoring signals from the system against a set of conditions, the method including: receiving, from the system, signals providing information regarding the system, wherein the system includes at least one reagent flowing into the system and recovers analytes within the fluid, wherein the analytes provide an indication of a value of the at least one parameter; identifying, by analyzing the signals, whether the analyte recovery of the system is meeting the set of conditions identifying a desired analyte recovery of the system; and modifying, based upon the analyte recovery not meeting the set of conditions, conditions of the system for recovery of the analyte, wherein the modifying includes adjusting at least one parameter of the system.
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公开(公告)号：US20220168674A1
公开(公告)日：2022-06-02
申请号：US17108629
申请日：2020-12-01
Applicant: Hach Company
Inventor： Nelson E. Dervaes , Lynn Ruth Leone
IPC: B01D35/143 , B01D37/04 , C02F1/00 , G01N15/08
Abstract: An embodiment provides a method for determining a filter life, including: introducing an aqueous sample into a filtration device comprising at least one filter and one or more sensors located upstream of the at least one filter, wherein the one or more sensors are capable of measuring a component of the aqueous sample; measuring the component of the aqueous sample using the one or more sensors; identifying a load on the at least one filter based upon the measuring of the component of the aqueous sample and at least one filtration characteristic; and determining the filter life of the at least one filter based upon the identifying. Other aspects are described and claimed.
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公开(公告)号：US20210372924A1
公开(公告)日：2021-12-02
申请号：US16883595
申请日：2020-05-26
Applicant: Hach Company
Inventor： Angella Nicholle Greenawalt
IPC: G01N21/64
Abstract: An embodiment provides a method for measuring zinc in a solution, including: preparing an indicator solution; introducing the indicator solution to a solution, wherein the solution contains an amount of zinc and the introducing causes a change in fluorescence of the solution in response to the indicator solution reacting with the zinc; and measuring the amount of zinc in the solution by measuring a change in intensity of the fluorescence. Other aspects are described and claimed.
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公开(公告)号：US20210003529A1
公开(公告)日：2021-01-07
申请号：US16459300
申请日：2019-07-01
Applicant: Hach Company , University of Warwick
Inventor： Zoë Duncan , Julie Victoria Macpherson , Samuel James Cobb
IPC: G01N27/416 , G01N27/30
Abstract: An embodiment provides a device for measuring pH in an aqueous sample, including: at least one measurement electrode comprising a first carbon region, wherein the carbon region comprises a single pH sensitive carbon region, wherein the single pH sensitive carbon region of the measurement electrode is a sp2 carbon region of a boron doped diamond-based pH electrode; at least one reference electrode; at least one auxiliary electrode; and a memory storing instructions executable by a processor to identify a pH of an aqueous sample by measuring an electrical potential between the at least one measurement electrode and the at least one reference electrode. Other aspects are described and claimed.
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