公开(公告)号：US20240102984A1

公开(公告)日：2024-03-28

申请号：US17951558

申请日：2022-09-23

Applicant: HACH COMPANY

Inventor： Sarah ANCIAUX ,  Melinda BUYCK

IPC: G01N33/18 ,  G01N21/78 ,  G01N31/22

CPC classification number: G01N33/182 ,  G01N21/78 ,  G01N31/22

Abstract: A kit and powder composition are described that can be used to determine a concentration of orthophosphate in a water system. The kit includes a first powder composition including molybdate; and a second powder composition including ascorbic acid. A powder composition is also described that includes molybdate, pyrosulfate, and less than wt. % ascorbic acid. A method for determining the concentration of orthophosphate in a water system using the kit includes adding the first and second powder compositions to a water sample collected from the water system, measuring an absorbance of the water sample after the first and second powder compositions have been added to the water sample, and determining the concentration of orthophosphate in the water system based on the measured absorbance.

公开(公告)号：US20240102923A1

公开(公告)日：2024-03-28

申请号：US17950415

申请日：2022-09-22

Applicant: Hach Company

Inventor： Brendan Easley Young ,  Melanie Ann Roth

IPC: G01N21/31 ,  G01N33/18

CPC classification number: G01N21/31 ,  G01N33/1813

Abstract: An embodiment provides a method for measuring zinc in an aqueous sample, including: adding an iron chelating agent to the aqueous sample; chelating an amount of iron in the aqueous sample with the iron chelating agent; and measuring the amount of zinc in the aqueous sample by measuring a change in intensity of the absorbance of the iron chelated aqueous sample. Other aspects are described and claimed.

公开(公告)号：USD1018328S1

公开(公告)日：2024-03-19

申请号：US29834274

申请日：2022-04-11

Applicant: HACH COMPANY

Designer： Robert Luther

Abstract: FIG. 1 is a front, right-side, top perspective view of a sensor cleaning and calibration system housing, showing the new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left-side elevational view thereof;
FIG. 5 is a right-side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines depict parts of the sensor cleaning and calibration system housing that form no part of the claimed design.

公开(公告)号：US20230280325A1

公开(公告)日：2023-09-07

申请号：US17687999

申请日：2022-03-07

Applicant: HACH COMPANY

Inventor： Scott S. DUNAWAY ,  David E. LOTTON

IPC: G01N33/18 ,  H04B1/40 ,  H02J50/10

CPC classification number: G01N33/18 ,  H04B1/40 ,  H02J50/10

Abstract: A probe is described that is configured to measure a parameter of a liquid, such as water. The probe includes a probe head and a sensor probe that is detachably coupled to the probe head. The probe head and the sensor probe each include a radio frequency (RF) transceiver. The sensor probe measures the parameter of the liquid and transmits data relating to the measured parameter to the probe head by the RF transceivers. The probe can optionally include an inductive power coupling between the probe head and the sensor probe, and an interface between the probe head and sensor probe can be free of conductive connections.

公开(公告)号：US20230257283A1

公开(公告)日：2023-08-17

申请号：US17609592

申请日：2021-09-24

Applicant: HACH COMPANY

Inventor： Matthew GRAY

IPC: C02F1/00

CPC classification number: C02F1/008 ,  C02F2209/001 ,  C02F2209/02 ,  C02F2209/04 ,  C02F2209/055 ,  C02F2209/06 ,  C02F2209/11 ,  C02F2209/20 ,  C02F2209/40

Abstract: A method, system, and computer readable storage medium for determining an optimal amount of coagulant to be added to water for coagulation treatment. The method includes predicting a water quality index that would be achieved for a corresponding nominal coagulant dose by evaluating at least one coagulation-related incoming water parameter of water that has not been treated with coagulant, with a first mathematical model constructed from historical data including (i) previously administered coagulant dosages; and (ii) previously determined values of the water quality index of the water. The method also includes determining whether the predicted water quality index is within a target range. If the predicted quality index is not within the target range, then the coagulant dosage can be adjusted, and the adjusted dosage can be evaluated to predict the water quality index that would be achieved if the adjusted coagulant dosage is administered to the water.

公开(公告)号：US11612840B2

公开(公告)日：2023-03-28

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 ,  C02F101/12 ,  C02F103/34

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.

公开(公告)号：US20230067125A1

公开(公告)日：2023-03-02

申请号：US17826858

申请日：2022-05-27

Applicant: Hach Company

Inventor： Angella Nicholle Greenawalt

IPC: G01N33/52 ,  G01J3/02 ,  G01N21/78

Abstract: An embodiment a method for measuring an amount of manganese in an aqueous sample, including: reducing, using a dechlorination reagent, wherein the dechlorination reagent comprises iron(II) and potassium iodide; oxidizing, under an alkaline condition using sodium hydroxide, Mn(II) to Mn(IV) in the aqueous sample, and chelating, using etidronic acid (HEDP), Fe(II) and Fe(III) in the aqueous sample, oxidizing an amount of 3,3′,5,5′-tetramethylbenzidine (TMB) with Mn(IV); and measuring, using a colorimetric indicator, the amount of manganese within the aqueous sample, by measuring an absorbance intensity at a wavelength of the oxidized amount of 3,3′,5,5′-tetramethylbenzidine (TMB). Other aspects are described and claimed.

公开(公告)号：US20230032774A1

公开(公告)日：2023-02-02

申请号：US17387572

申请日：2021-07-28

Applicant: Hach Company

Inventor： Nelson E. Dervaes

IPC: G01N21/25 ,  B05B1/06 ,  B05B1/34

Abstract: An embodiment provides a nozzle, including: a conical-shaped portion having a first end and a second end substantially opposite the first end, wherein the first end has a smaller diameter than the second end; the first end having an attachment to hold the nozzle in a flow of fluid from an inlet, wherein the nozzle is positioned with the first end facing an inflow of a fluid and the second end facing a chamber; and the conical-shaped portion configured to direct the inflow of the fluid along an inner surface of the chamber, wherein the inflow of the fluid travels around the outer diameter of the conical-shaped portion. Other aspects are described and claimed.

公开(公告)号：US20220308006A1

公开(公告)日：2022-09-29

申请号：US17616871

申请日：2020-06-05

Applicant: Hach Company

Inventor： Gregg Allan McLeod

IPC: G01N27/38 ,  G01N27/416 ,  G01N1/20

Abstract: An electrode cleaning and calibration system generally comprises a sensor holder assembly machined from a block of solid acrylic or similar plastic material, which can accommodate a variety of types and sizes of sensors for use in monitoring and measurement of water processing and treatment processes. Examples of sensors suitable for use in the system include pH sensors, dissolved oxygen sensors, chlorine sensors, ozone sensors, total suspended solid sensors, mixed liquor suspended solid sensors, ammonia sensors, monochloramine sensors, and ultraviolent transmittance sensors.

公开(公告)号：US11421672B2

公开(公告)日：2022-08-23

申请号：US16704897

申请日：2019-12-05

Applicant: Hach Company

Inventor： Jordan Vin Raviv ,  Nelson E. Dervaes

IPC: F04B43/12 ,  F04B13/00 ,  F04B43/08 ,  F04B53/18

Abstract: An embodiment provides a self-lubricating linear peristaltic pump for delivering precise volumes of fluid, including: a housing comprising a slide area; at least one pinch block located within the slide area of the housing, wherein the at least one pinch block comprises a base end and a face end; a plurality of compression blocks located within the slide area of the housing, wherein each of the plurality of compression blocks comprises a base end and a face end; a cam located within the housing, wherein the mechanically contacts the base end of each of the at least one pinch block and the base end of each of the plurality of compression blocks; a motor mechanically coupled to the cam, wherein the motor moves the cam upon operation of the motor; and at least one tube in contact with the face end of each of the at least one pinch block and the face end of each of the plurality of compression blocks. Other aspects are described and claimed.