Sensors for pH, Conductivity, Ion, DO and ORP Applications

Sensors

Sensors for pH, Conductivity, Ion Concentration, Dissolved Oxygen and ORP

Please choose the Sensor Family that suits you best:

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Sensor
Sensor
Sensor

pH Sensor

Conductivity Sensor

Ion-Selective Electrode

High quality sensors for general purposes as well as specialists designed for your application.
Robust conductivity sensors for precise determination over the whole conductivity range.
Quick and easy determination of the concentration of a variety of dissolved ions and gases.
Sensor
Sensor
Sensor

Dissolved Oxygen Sensor

ORP Sensor

LightEdition Sensor

Optical and polarographic sensors for reliable determination of dissolved oxygen.
Accurate and reliable sensors that measure ORP (oxidation reduction potential).
pH, conductivity and dissolved oxygen sensors that are robust and budget-friendly.
Online Store
Sensor

High quality sensors for general purposes as well as specialists designed for your application.

Sensor

Robust conductivity sensors for precise determination over the whole conductivity range.

Sensor

Quick and easy determination of the concentration of a variety of dissolved ions and gases.

Sensor

Optical and polarographic sensors for reliable determination of dissolved oxygen.

Sensor

Accurate and reliable sensors that measure ORP (oxidation reduction potential).

Sensor

pH, conductivity and dissolved oxygen sensors that are robust and budget-friendly.

Please choose the Sensor Family that suits you best:

Online Store
Sensor
Sensor
Sensor

pH Sensor

Conductivity Sensor

Ion-Selective Electrode

High quality sensors for general purposes as well as specialists designed for your application.
Robust conductivity sensors for precise determination over the whole conductivity range.
Quick and easy determination of the concentration of a variety of dissolved ions and gases.
Sensor
Sensor
Sensor

Dissolved Oxygen Sensor

ORP Sensor

LightEdition Sensor

Optical and polarographic sensors for reliable determination of dissolved oxygen.
Accurate and reliable sensors that measure ORP (oxidation reduction potential).
pH, conductivity and dissolved oxygen sensors that are robust and budget-friendly.
Online Store
Sensor

High quality sensors for general purposes as well as specialists designed for your application.

Sensor

Robust conductivity sensors for precise determination over the whole conductivity range.

Sensor

Quick and easy determination of the concentration of a variety of dissolved ions and gases.

Sensor

Optical and polarographic sensors for reliable determination of dissolved oxygen.

Sensor

Accurate and reliable sensors that measure ORP (oxidation reduction potential).

Sensor

pH, conductivity and dissolved oxygen sensors that are robust and budget-friendly.

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FAQ

How do I find the right sensor for my application?

The manufacturing of high quality sensors with outstanding performance not only required technical skills and expertise but also a profound understanding of the various customer applications and their specific requirements. METTLER TOLEDO offers a comprehensive sensor portfolio that covers all of your application needs in pH, conductivity, ion, dissolved oxygen or ORP.

There are several ways to find the appropriate sensor

How do I store sensors correctly?

All user manuals come with the necessary information about the short and long time storage of the respective probe.

General tips for long time storage:

  • pH and ORP sensors: with wetting cap filled with reference electrolyte (often 3 mol/L KCl); it is also possible to store the electrode in pH buffer 4 or in 0.1 mol/L HCl
  • Ion selective sensors: dry
  • Conductivity sensors: dry
  • Polarographic DO sensors: with measuring module filled with electrolyte and with green protective cap mounted (dry) to protect from mechanical damage
  • Galvanic DO sensors: with storage vial filled with 10% NaCl
  • Optical DO sensors: in the calibration tube ensuring first that the sponge has been dampened with distilled water or keep the sensor in a beaker filled with distilled water

What is the minimum immersion depth of my sensor?

In general, sensors have to be immersed deep enough to have the membrane glass (1) and the diaphragm (2) is completely covered by the solution.

For some sensors, which are particularly designed for low volumes, the minimal immersion depths are as follows.

InLab® pH Sensorsminimal immersion depths:
InLab® Semi-Micro:15 mm
InLab® Solids (Pro):15 mm
InLab® Viscous:14 mm
InLab® Micro Pro:12 mm
InLab® Redox Micro:10 mm
InLab® Micro:7 mm
InLab® NMR:7 mm
InLab® Ultra-Micro:5 mm
InLab® Nano:2 mm

 

InLab® conductivity sensors:
InLab® 751-4 (Cond):16 mm
InLab® 752-6:17 mm
InLab® 730:30 mm

 

Others:
InLab® 605: 5 mm 
LE422:10 mm
PerfectIon sensors:3 mm
InLab® Reference Plus:20 mm

 

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