Ion-Selective Electrode: For a Wide Range of ISE Applications

Ion-Selective Electrode

Combined and Half-Cells ISE for Reliable Ion Measurement

Meters

pH Meters

To fit your electrochemistry system needs, we offer a variety of benchtop and portable meters that are professional and durable. Our portfolio offers products designed for compliance, routine measurements or anyone working on a tight budget.

Benchtop MetersPortable Meters

Solutions

pH Solutions

METTLER TOLEDO offers a comprehensive range of top quality buffers, standards, electrolytes, cleaning and verification solutions for determination of pH, conductivity, ion concentration, ORP and dissolved oxygen.All solutions are available in small volume bottles either in packs or single and single use sachets.

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Service

Service for pH meters and sensors

We offer different service packages depending on your needs. These range from professional on-site installation and configuration to documented proof of compliancy. If full coverage beyond initial warranty is desired, we offer an extended care package in the form of preventive maintenance and repair.

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Analytical Instruments

Products and Specs

 
Products and Specs
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Connector
Type of junction
Shaft Material
Sensor Type
Type of membrane
Material No.: 51344700
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonSilver/Sulfide
Material No.: 51344800
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonSilver/Sulfide
Material No.: 51344703
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membranePolymer
IonCalcium
Material No.: 51344803
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membranePolymer
IonCalcium
Material No.: 51344706
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonChloride
Material No.: 51344806
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonChloride
Material No.: 51344709
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonCyanide
Material No.: 51344809
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonCyanide
Material No.: 51344712
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonCupric
Material No.: 51344812
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonCupric
Material No.: 51344715
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonFluoride
Material No.: 51344815
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonFluoride
Material No.: 51344718
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonIodide
Material No.: 51344818
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonIodide
Material No.: 51344721
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membranePolymer
IonPotassium
Material No.: 51344821
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membranePolymer
IonPotassium
Material No.: 51344724
See details
ConnectorS7
Type of junctionCeramic
Shaft MaterialGlass
Sensor TypeCombined electrode
Type of membraneNa+-Glass
IonSodium
Material No.: 51344727
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membranePolymer
IonNitrate
Material No.: 51344827
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membranePolymer
IonNitrate
Material No.: 51344730
See details
ConnectorBNC
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonLead
Material No.: 51344830
See details
ConnectorLemo
Type of junctionClick & Clear™
Shaft MaterialEpoxy
Sensor TypeCombined electrode
Type of membraneSolid state
IonLead
Material No.: 51341000
See details
ConnectorS7
Type of junction--
Shaft MaterialPPS
Sensor TypeHalf-cell
Type of membranePolymer
IonAmmonia (gas)
Material No.: 51107673
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonLithium
Material No.: 51340900
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonAmmonium
Material No.: 51340500
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonFluoride
Material No.: 51340263
See details
ConnectorS7
Type of junction--
Shaft MaterialGlass
Sensor TypeHalf-cell
Type of membraneNa+-Glass
IonSodium
Material No.: 51107684
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonMagnesium
Material No.: 51107681
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonCyanide
Material No.: 51107675
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonSulfide
Material No.: 51340400
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonChloride
Material No.: 51340700
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonPotassium
Material No.: 51340600
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonCalcium
Material No.: 51107870
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonThiocyanate
Material No.: 51340800
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonNitrate
Material No.: 51107678
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonCopper
Material No.: 51340300
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonBromide
Material No.: 51107676
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonFluoroborate
Material No.: 51107672
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonCadmium
Material No.: 51107680
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM
Sensor TypeHalf-cell
Type of membraneSolid state
IonIodide
Material No.: 51107674
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonBarium
Material No.: 51107873
See details
ConnectorS7
Type of junction--
Shaft MaterialPOM/PVC
Sensor TypeHalf-cell
Type of membranePolymer
IonLead
Comparison

Documentation

Product Brochures

InLab® Sensors
The manufacturing of high quality sensors with outstanding performance not only requires technical skills and expertise but also a profound understand...

Competence

Fluoride Ion Selective Electrode
Download a free copy of the Fluoride Ion Selective Electrode Application Guide and get more information about theory, principle and calibration for th...
Ion Selective Electrode Guide
Receive a free copy of the Ion Selective Electrode Guide and get useful tips and hints for selected ISE applications in various industrial segments. L...

Services

(Toll Free) 1800 22 8884 & 1800 1028 460
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Explore our Services - Tailored to Fit your Equipment

We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.

Performance
Maintenance & Optimization
Expertise
Training & Consulting

FAQ

How to store Ion Selective Electrodes correctly?

All user manuals come with the necessary information about the short and long term storage of the respective sensor. Generally Ion Selective Electrodes should be stored dry for long term storage.

What response time is reasonable for an ion selective electrode?

The response time depends on the type of ion as well as its concentration.

Whereas the relatively fast sensors for Na+ and F- feature response times of 1-3 minutes at higher concentrations, the response time increases to 5-10 minutes when measuring in the range of the lower detection limits.

The size of an ion has an important impact on the speed of a measurement. That is why most of the other ions take longer to be measured. Analysis of heavy metals such as Cu2+ or Cd2+ can even take 20-30 minutes when performed near the lower detection limit.

A gentle and constant stirring in ion measurement is crucial for achieving a stable signal as fast as possible. Stabilization is reached faster, when moving from a lower concentration to a higher one than going the inverse way. Therefore, it is recommended to always start with the lowest concentration when calibrating and measuring.

What is the detection limit of an ion selective electrode?

The potential of the sensor is measured at many different concentrations of the ion of interest. One draws a curve of these mV signals against the concentration (logarithmic). Normally, it is S-shaped: rather flat at very high and at very low concentrations, almost linear in-between. The specified detection limits are defined by the range in which the behavior is more or less linear. To make an ISE usable for a different range, one would have to change the membrane surface (larger for lower concentrations) or use a different ion-selective substance in the membrane.

What is the average lifetime of sodium ISE?

A sodium selective electrode is a glass electrode very similar to a pH electrode. pH glass electrodes show a negligible alkali error, and amplification of the "alkali error" leads to sodium selective electrodes which respond only to changes in the sodium ion concentration at pH values above 7. Therefore the lifetime of a sodium ISE is similar to the lifetime of a pH electrode, and is influenced by a number of factors (e.g. elevated temperatures, extreme pH values, etc.).

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