ClassID:

168519

G01N27/4165 - CPC Classification

Classification description:

Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis; Systems checking the operation of, or calibrating, the measuring apparatus for pH meters

Recent Application in this class:
#1
20250362267
2025-11-27

CALIBRATION APPARATUS, CALIBRATION METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM

#2
20250334543
2025-10-30

SENSING ELEMENT FOR USE WITH MEDIA-PRESERVING STORAGE AND CALIBRATION CHAMBER

#3
20250277769
2025-09-04

SENSOR WITH ROTATABLE SENSOR ELEMENT AND PRESSURE EQUALIZATION MECHANISM

#4
20250044274
2025-02-06

MULTI-FUNCTIONAL WATER QUALITY SENSOR

#5
20250003921
2025-01-02

METHOD FOR OPERATING AN ELECTROCHEMICAL MEASURING POINT AND ELECTROCHEMICAL MEASURING POINT

#6
20240410856
2024-12-12

CALIBRATION REFERENCE ELEMENT FOR PH MEASURING DEVICES, CALIBRATION REFERENCE SYSTEM, HOLDER FOR A CALIBRATION REFERENCE ELEMENT, AND METHOD FOR THE CALIBRATION OF A PH MEASURING DEVICE

#7
20240345023
2024-10-17

AQUATIC TOTAL ALKALINITY MEASUREMENT SYSTEM AND METHOD

#8
20240255465
2024-08-01

METHODS TO AUTOMATICALLY CALIBRATE PH SENSORS WITHOUT SAMPLING

#9
20240219344
2024-07-04

SYSTEM AND METHOD FOR SELF-CALIBRATING OF ION SELECTIVE ELECTRODES BASED ON DIFFERENTIAL VOLTAGE MEASUREMENT

#10
20240132829
2024-04-25

IDENTIFICATION OF CALIBRATION DEVIATIONS OF pH-MEASURING DEVICES

#11
20240110888
2024-04-04

METHOD FOR REMOTE CONTROL OF AN APP FOR MEASURING, CALIBRATING, AND/OR ADJUSTING A SENSOR

#12
20240027388
2024-01-25

AUTO-CALIBRATION PH SENSOR

#13
20240011932
2024-01-11

MEASURING CELL WITH ANTI-TWIST PROTECTION

#14
20230314360
2023-10-05

pH SENSOR WITH BACKUP pH SENSING ELECTRODE

#15
20230288370
2023-09-14

Adjustment of a pH electrode carbon region

#16
20230228707
2023-07-20

Mitigating impact of ion buildup on pH sensor performance

#17
20230228706
2023-07-20

Mitigating impact of ion buildup on pH sensor performance

#18
20230194466
2023-06-22

MEASUREMENT DEVICE AND METHOD FOR DETERMINING TIME TO REPLACE RESPONSIVE GLASS MEMBRANE

#19
20230152272
2023-05-18

CALIBRATION LIQUID FOR WATER QUALITY MEASUREMENT DEVICE, CALIBRATION-LIQUID-FILLED CONTAINER FOR WATER QUALITY MEASUREMENT DEVICE, AND CALIBRATION METHOD USING CALIBRATION LIQUID FOR WATER QUALITY MEASUREMENT DEVICE

#20
20230110811
2023-04-13

pH METER CALIBRATION AND CORRECTION

#21
20230097075
2023-03-30

MEASURING APPARATUS, MEASURING METHOD, AND ION-SENSITIVE SEMICONDUCTOR DEVICE

#22
20220373497
2022-11-24

PROBE CHAMBER FOR INLINE MEASUREMENTS

#23
20220338523
2022-10-27

IN-LINE SENSOR VALIDATION SYSTEM

#24
20220325223
2022-10-13

Identification of calibration deviations of pH-measuring devices

#25
20220187239
2022-06-16

Sensor with rotatable sensor element and pressure equalization mechanism

#26
20210372975
2021-12-02

PH AND MOISTURE INDICATOR DEVICES AND FORMULATIONS

#27
20210355005
2021-11-18

Sensor with memory storing calibration information

#28
20210333234
2021-10-28

Adjustment of a pH electrode carbon region

#29
20210231605
2021-07-29

Mitigating impact of ion buildup on pH sensor performance

#30
20210215637
2021-07-15

Smart sensor system

#31
20210208099
2021-07-08

POTENTIOMETRIC MEASURING CHAIN AND METHOD FOR DETERMINING THE PH VALUE

#32
20210116414
2021-04-22

Methods and apparatus for measuring analytes

#33
20210055257
2021-02-25

Portable sensor validation system

#34
20210048408
2021-02-18

Methods to automatically calibrate pH sensors without sampling

#35
20200400610
2020-12-24

Alkalinity measurement of an aqueous sample

#36
20200333289
2020-10-22

Apparatus, systems and methods for in situ measurement of an oxidation / reduction potential and pH of a solution

#37
20200319132
2020-10-08

Calibration electrode

#38
20200264131
2020-08-20

Online reference calibration

#39
20200264123
2020-08-20

Voltammetric reference control system

#40
20200225188
2020-07-16

Characterization and failure analysis of a sensor using impedance frequency response spectra

#41
20200217817
2020-07-09

Sensing element for use with media-preserving storage and calibration chamber

#42
20200124461
2020-04-23

Method for determining a process variable with a classifier for selecting a measuring method

#43
20200096477
2020-03-26

Predictive lifespan of analytical sensors

#44
20200064307
2020-02-27

PH Meter

#45
20200060326
2020-02-27

In-line sensor validation system

#46
20200011830
2020-01-09

PH value measuring device comprising in situ calibration means

#47
20190376927
2019-12-12

Online reference calibration

#48
20190323989
2019-10-24

Device and method for verification, calibration and/or adjustment of an inline measuring device

#49
20190322556
2019-10-24

Sensor with memory storing calibration information

#50
20190317044
2019-10-17

Alkalinity measurement of an aqueous sample

#51
20190277802
2019-09-12

Failure analysis of a measuring sensor with an integrated temperature sensor

#52
20190107510
2019-04-11

METHOD FOR MONITORING THE FUNCTION OF A SENSOR

#53
20190025273
2019-01-24

Multi-functional water quality sensor

#54
20190017961
2019-01-17

Method and device for monitoring and/or determining the condition of a measuring probe

#55
20190017960
2019-01-17

Method for operating a measurement site, and measurement site

#56
20180373235
2018-12-27

Sensor service prediction

#57
20180313786
2018-11-01

Methods and apparatus for measuring analytes

#58
20180259479
2018-09-13

Sensor calibration device and sensor calibration method

#59
20180231496
2018-08-16

Portable sensor validation system

#60
20180216059
2018-08-02

Identification of calibration deviations of pH-measuring devices

#61
20180196021
2018-07-12

PH indicator device and formulation

#62
20180095054
2018-04-05

Characterization and failure analysis of a sensor using impedance frequency response spectra

#63
20180073354
2018-03-15

Downhole tool and electronics packaging configuration therefor

#64
20170269028
2017-09-21

Device, sensor unit and transmitter for determining a measured variable

#65
20170241944
2017-08-24

ISFET measuring probe, measurement circuit for the ISFET measuring probe, and method

#66
20170059518
2017-03-02

SINGLE-USE pH SENSOR STORAGE SOLUTION

#67
20160349209
2016-12-01

Magnetic stimulus of ISFET-based sensor to enable trimming and self-compensation of sensor measurement errors

#68
20160299096
2016-10-13

Sensor with memory storing calibration information

#69
20160123952
2016-05-05

Methods for preparing buffer solutions and predicting acidic amendment requirements in soils

#70
20160095475
2016-04-07

In-line sensor validation system

#71
20150355134
2015-12-10

PH VALUE MEASURING DEVICE COMPRISING IN SITU CALIBRATION MEANS

#72
20150355127
2015-12-10

Method for identifying pH, device for same, and method for identifying ion concentration

#73
20150316397
2015-11-05

Method and apparatus for determining a state of a measuring transducer integrated in a process container

#74
20150308994
2015-10-29

pH indicator device and formulation

#75
20150212041
2015-07-30

USE OF A REFERENCE SYSTEM FOR ELECTROCHEMICAL ANALYSIS AND DEPOSITION METHODS

#76
20150101938
2015-04-16

Measurement device with automated calibration

#77
20140324376
2014-10-30

Methods and apparatus for measuring analytes

#78
20140200842
2014-07-17

Device and method for detecting chemical and physical phenomena

#79
20140012530
2014-01-09

Arrangement and method for calibrating at least two sensors in parallel

#80
20130291618
2013-11-07

Calibratable sensor unit for reaction vessels

#81
20130288359
2013-10-31

Calibratable sensor unit for reaction vessels

#82
20120265474
2012-10-18

Methods and apparatus for measuring analytes

#83
20120222467
2012-09-06

Measuring device with error content question sentence and user-selectable choices

#84
20120144894
2012-06-14

Method for start-up of a measuring device

#85
20110259130
2011-10-27

METHOD OF MONITORING A POTENTIOMETRIC MEASURING PROBE

#86
20110236962
2011-09-29

Calibratable sensor unit for reaction vessels

#87
20110191063
2011-08-04

Method for determining failure rate of an electrochemical sensor

#88
20110098939
2011-04-28

PROCESS ANALYTIC SENSOR WITH LOW POWER MEMORY WRITE FUNCTION

#89
20110056847
2011-03-10

Ion concentration measurement system and methods thereof

#90
20100063762
2010-03-11

Method for operating a measuring point

#91
20090287445
2009-11-19

System and method for calibrating and monitoring the condition of a sensor device

#92
20090139298
2009-06-04

Disposable measurement arrangement and method of testing and/or calibrating it

#93
20090120807
2009-05-14

Device and method for performing maintenance on an apparatus in a flow duct

#94
20080289959
2008-11-27

Self-diagnostic sensor system

#95
20080149497
2008-06-26

Method of monitoring an electrochemical half-cell

#96
20080067081
2008-03-20

pH measurement system and method for reducing time-drift effects thereof

#97
20080042665
2008-02-21

Impedance measurement of a pH electrode

#98
20080034864
2008-02-14

Pluggable module for a liquid or gas sensor

#99
20070214872
2007-09-20

Measuring device, measuring probe, and method of operating the measuring device

#100
20070084721
2007-04-19

Drift calibration method and device for the potentiometric sensor

#101
20060155511
2006-07-13

Method for monitoring sensor function

#102
20060125481
2006-06-15

Method and device for monitoring a reference half cell

#103
20050166660
2005-08-04

Method and device for determining the condition of a measuring probe

#104
18613336
2025-08-12

Mitigating impact of ion buildup on pH sensor

#105
18613307
2025-01-14

Mitigating impact of ion buildup on pH sensor

#106
18613266
2025-02-11

Mitigating impact of ion buildup on pH sensor

#107
18613238
2025-03-04

Mitigating impact of ion buildup on pH sensor

#108
15090792
2019-01-15

Method of sensor conditioning for improving signal output stability for mixed gas measurements