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公开(公告)号：US20230375514A1
公开(公告)日：2023-11-23
申请号：US18319143
申请日：2023-05-17
Applicant: Hach Company
Inventor： Angella Nicholle Greenawalt , Amit Das
CPC classification number: G01N31/225 , G01N33/18
Abstract: An embodiment provides a method for measuring ozone in a sample, including: preparing a thiocarbamate-based indicator; introducing the thiocarbamate-based indicator to a sample, wherein the sample contains an amount of ozone and the introducing causes a change in fluorescence of the solution; and measuring the amount of ozone in the sample by measuring the change in intensity of the fluorescence. Other aspects are described and claimed.
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公开(公告)号：US11808733B2
公开(公告)日：2023-11-07
申请号：US17143700
申请日：2021-01-07
Applicant: Hach Company
Inventor： Corey Alan Salzer
IPC: G01N27/416
CPC classification number: G01N27/4167
Abstract: An embodiment provides a method for measuring an alkalinity of an aqueous sample, including: introducing an aqueous sample to a voltammetric pH electrode; holding the potential of a voltammetric pH electrode at a pH end point potential; applying a voltage step waveform comprising at least one potential pulse to the voltammetric pH electrode; titrating the aqueous sample; and measuring a current output resulting from the voltage step waveform, wherein the measuring comprises square wave amperometry. Other aspects are described and claimed.
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公开(公告)号：US11796549B2
公开(公告)日：2023-10-24
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
CPC classification number: G01N35/00663 , G01N2035/00673
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：US20230324334A1
公开(公告)日：2023-10-12
申请号：US17714464
申请日：2022-04-06
Applicant: Hach Company
Inventor： David Langley Rick
Abstract: An embodiment provides a method for measuring a component of an aqueous sample using square wave modulation, including: introducing the aqueous sample to a chamber of a square wave modulation apparatus; applying a stimulus voltage step to the aqueous sample, wherein the stimulus voltage comprises a staircase voltage, wherein each step of the staircase voltage defines a group, wherein the group comprises one or more square wave modulation cycles; adjusting a time acquisition window, wherein the time acquisition window is a portion of each of the half cycle of the stimulus voltage; measuring a resultant current output resulting from the stimulus voltage within the time acquisition windows; and averaging the resultant current output across at least one or more cycles of each group. Other aspects are described and claimed.
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公开(公告)号：US20230296560A1
公开(公告)日：2023-09-21
申请号：US17698263
申请日：2022-03-18
Applicant: Hach Company
Inventor： David Langley Rick
Abstract: An embodiment provides a method for measuring a component of an aqueous sample using square wave voltammetry, including: introducing the aqueous sample to a chamber of a square wave voltammetry apparatus; applying a stimulus voltage step to the aqueous sample, wherein the stimulus voltage comprises a staircase voltage, wherein each step of the staircase voltage defines a group and comprises two or more repeated square wave modulations of equal voltage amplitude; measuring a resultant current output resulting from the stimulus voltage, wherein the measuring comprises square wave voltammetry; and averaging the resultant current output across at least two or more cycles of each group. Other aspects are described and claimed.
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Patent Agency Ranking
76.发明公开公开(公告)号：US20230202889A1
公开(公告)日：2023-06-29
申请号：US18087375
申请日：2022-12-22
Applicant: HACH COMPANY
Inventor： Vishnu RAJASEKHARAN , Dan KROLL , Matthew GRAY
CPC classification number: C02F3/006 , C02F3/30 , C02F2209/34
Abstract: Methods and systems for controlling nitrous oxide production in a wastewater treatment facility in which wastewater is treated with microbes in a biological reactor. Nitrous oxide production can be controlled by determining an amount of two or more nutrients in the biological reactor, calculating a value that represents a comparison of the values, comparing the calculated value to a threshold value, and optionally taking a corrective action to reduce nitrous oxide production based on the comparison. In one aspect, nitrous oxide production can be controlled by determining an amount of ammonium in the biological reactor, determining an amount of a nitrogen compound that can include nitrite, nitrate, and/or hydroxylamine, calculating a value that compares the amount of ammonium to the amount of the nitrogen compound, and taking a corrective action that changes a system parameter to reduce the nitrous oxide production if the calculated value surpasses a threshold limit.
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公开(公告)号：US20230122443A1
公开(公告)日：2023-04-20
申请号：US18081996
申请日：2022-12-15
Applicant: HACH COMPANY
Inventor： Brian Alan HARMON , Gregory James LIPINSKI , Joseph Rockstan WILLIAMS , Theophilus Brian MOONEY , Timothy A. HIGGINS , Dan Jonathan KROLL , Vishnu RAJASEKHARAN , Corey Alan SALZER
Abstract: An embodiment provides a method for transferring information from at least one instrument to an application, including: establishing a central protocol structure, wherein the central protocol structure defines a format for information transmitted utilizing the central protocol structure; transmitting over a short-range wireless communication channel information from the at least one device to the application, wherein the information is formatted in a broadcast packet in view of the central protocol structure; receiving, at the application, information from the at least one device; and performing, within the application, an action with respect to the information within the application, wherein the performing comprises deciphering the information contained in view of the central protocol structure.
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公开(公告)号：US20230072210A1
公开(公告)日：2023-03-09
申请号：US17986389
申请日：2022-11-14
Applicant: Hach Company
Inventor： Amit Das
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：US20220334059A1
公开(公告)日：2022-10-20
申请号：US17233942
申请日：2021-04-19
Applicant: Hach Company
Inventor： Amit Das
IPC: G01N21/64
Abstract: An embodiment provides a method for measuring mercury in a solution, including: preparing a thiocarbamate-based indicator; introducing the thiocarbamate-based indicator to a solution, wherein the solution contains an amount of mercury and the introducing causes a change in fluorescence of the solution; and measuring the amount of mercury 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：US11422093B2
公开(公告)日：2022-08-23
申请号：US16433752
申请日：2019-06-06
Applicant: Hach Company
Abstract: An embodiment provides a method for measuring free chlorine in a solution, including: preparing a thiocarbamate-based indicator; introducing the thiocarbamate-based indicator to a solution, wherein the solution contains an amount of free chlorine and the introducing causes a change in fluorescence of the solution; and measuring the amount of free chlorine in the solution by measuring a change in intensity of the fluorescence. Other aspects are described and claimed.
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