Ammonium Combination ISE


PVC based sensor with a solid state mount

SKU: 3051 Category: Tags: ,

Here are some of the main benefits of using EDT direction Combination Ion Selective Electrodes:

  • 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 Ammonium sensor is PVC based with a solid state mount and does not degenerate during storage unlike conventional Ammonium electrodes. The lack of internal solution means that submersion is also possible as the sensor does not flex under reasonable pressure.

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 DR359TX 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). Click here to see a simple calibration procedure or learn more about the principles of ISE measurement

Additional information

Weight 0.15 kg
Dimensions 26 × 9 × 4 cm
Cable Length


Cap Diameter


Concentration Range

0.9-9000 ppm

Commodity Code






Endpoint Time

Typically 10-60 seconds


Calcium, Potassium, Sodium



pH Range


Potential Drift

2mV per Day

Reference Type

Double Junction

Temperature Range

5 – 50°C


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Product Brochure


Instruction Manual