Fluoride Combination ISE


Crystal based Fluoride Sensor

SKU: 3221 Category: Tags: ,

Here are some of the benefits of using the EDT directION Fluoride Combination ISE:

  • Rugged Solid State Sensors
  • No Filling solutions
  • No membrane replacements
  • Built in dry Reference electrode
  • Waterproof and submersible
  • Suitable for Laboratory and Field work
  • Compatible with all pH and Ion Meters
  • Stored dry for long lifetime
  • Low cost
  • Easy to use

The Fluoride sensor is Crystal based with a solid state mount and does not degenerate during storage unlike conventional Fluoride electrodes.

Each EDT directION Combination ISE has a 1 metre cable and a BNC connector (other connectors available on request) allowing use on all types of pH/ION meter including laboratory bench and research models. For direct concentration reading and absolute simplicity the EDT QP459 pH/ION meter is the perfect instrument for these ISEs.

For Quick Ion analysis for under £500 use our ION Concentration Calculator (mV Meter Required).

The solid state sensors have a huge advantage over conventional ISEs in that there is no internal fill solution to degenerate the sensor this means that EDT directION combination ISEs have an unrivalled lifetime and a very low cost of ownership.

EDT are a UK based manufacturer and produce ISEs for many prominent companies in the water testing sector. As a result our ISEs are very competitively priced and come complete with technical support provided from our vast library of applications and our in house electrochemistry technicians.

For optimum results use EDT direction standards and Ionic Strength Adjustment Buffers (ISABs). Learn more about the principles of ISE measurement in our technical support area.

Visit our YouTube Channel to see an example calibration.

Additional information

Weight 0.15 kg
Dimensions 26 × 9 × 4 cm




Cap Diameter




Cable Length


Resistance at 25 Deg C

<2.5 MOhm

Concentration Range

0.02 to 1900ppm


-54 to -59 mV per Decade

Potential Drift

Up to 2mV per 8 hours.

pH range

4-8 pH

Temperature Range

5 to 50 degrees C

Endpoint time

Typically 30 seconds


Hydroxide Ions

Reference Type

Single Junction

Body Type

Epoxy Body

Commodity Code



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Instruction Manual