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Ion Selective Field Effect Transistor (ISFET)

 

 

Ion Selective Field Effect Transistor (ISFET) is a type of electrode that contains a transistor coated with a chemically sensitive material to measure pH in solution and moist surfaces. As the potential at the chemically active surface changes with the pH, the current induced through the transistor varies. A temperature diode with the Ion Selective Field Effect Transistor (ISFET) simultaneously monitors the temperature at the sensing surface. The changes in current and temperature are correlated by the pH meter to a temperature compensated pH reading.

Products & Services
Ion selective electrodes measure the potential of a specific ion in solution. This potential is measured against a stable reference electrode of constant potential. Search by Specification | Learn more about Ion Selective Electrodes
pH transmitters provide electrical outputs that are proportional to potential of hydrogen (pH) inputs. Learn more about pH Transmitters
Ion specific electrode meters are millivolt meters that interface with ion selective electrodes (ISEs). These meters take the potential generated by the electrode and convert it into units of concentration. Search by Specification | Learn more about Ion Specific Electrode Meters
Proximity sensors, all types is a general search form for all proximity sensors and presence detection product areas. Search by Specification | Learn more about Proximity Sensors
RF diodes are designed to handle high-power radio frequency (RF) signals in stereo amplifiers, radio transmitters, television monitors, and other RF or microwave devices. Search by Specification | Learn more about RF Diodes
Product Announcements
Hach Company - IQ125 miniLab pH Meter
The IQ125 miniLab Professional pH Meter features a waterproof, rugged, non-glass pH sensor with an advanced ISFET silicon chip that provides stable readings in seconds. Allows for up to three points... (read more)
Extech Instruments Corp. - Waterproof ExStik® pH Meter
Built-in Smart chip offers advanced functions and features to a stick style pH meter not found anywhere else... (read more)
Thermo Scientific - Water Analysis/Orion Products - Orion 5-Star Portable Multimeter
- Key features include: Easy to use 3-button function; Balanced comfortable handling; Bright, backlit LCD display with ready indication; Simultaneous pH/ISE, DO, conductivity and temperature;... (read more)
 
Topics of Interest
Ion selective sensors have been used for analytical determination of a wide variety of ions since the 1900??s. Ion selective sensor??s utility and simplicity has replaced other wet analytical methods... (Read More)
14.2 The properties of silicon and their effects on sensors Silicon is a suitable material for sensor technologies as it manifests sufficient physical and chemical effects of an acceptable strength... (Read More)
The following abbreviations are used in this book: AB antibonding AC alternating current AFM atomic force microscopy ALE atomic layer epitaxy BESOI... (Read More)
Acronym Chapter Meaning 2DEG 1 two-dimensional electron gas AES 3 Auger electron spectroscopy ALE 2 atomic layer epitaxy AR 3... (Read More)
The following abbreviations are used throughout the book. ?-Sic hexagonal silicon carbide A acceptor AC alternating current AES Auger elctron... (Read More)
See more product announcements for Ion Selective Electrodes
FCA-22 Free Chlorine Analyzer

FCA-22 Free Chlorine Analyzer
Electro-Chemical Devices, Inc.


HYDRA Ammonium Analyzer

HYDRA Ammonium Analyzer
Electro-Chemical Devices, Inc.


Multi Channel Industrial ISE Analyzer/Controller

Multi Channel Industrial ISE Analyzer/Controller
Electro-Chemical Devices, Inc.


11 See more product announcements for Ion Selective Electrodes