The Measurement of Ions in Water

Application Methods

EDT directION have been writing ISE publications  for over 50 years. Visit our Support Area for a selection of available methods.

We manufacture and stock a full range of ISE’s  and related Standard solutions and Meters.


Image showing a flow plus Ion Selective Electrode.

Types of ISE

There are many types of ISE from Mini 7mm Half cells to 25mm diameter industrial combination ISEs. Each has specific advantages so be careful to select the product for your application.

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Measuring in the Field

The QP459 Portable ION Meter is ideal for ISE work in the field when used with Combination ISEs.

Visit our technical support areas for method and product advice or email or call +44(0) 1304 600960