The Determination of Sulphate in Water
As there is no direct measuring Sulphate ISE the analysis is performed using a sample subtraction technique with a Lead ISE as the sensor.
Hull Potential and Boats
Hull Potential and Boats. Getting a result is simple but understanding the result is another matter. We help you decipher the meaning.
REDOX Testing
REDOX testing is quick and simple and enables us to understand the corrosive power of the water under test.
Potassium in Water
This is a method for determining the concentration between 0.1 – 1000 ppm potassium in ground waters, drinking water and waste waters.
Hull Potential and Corrosion
A metal hull in water will inevitably have the potential to become corroded. Add a little stray direct current (DC) and this can become devastating.
Ion Selective Electrodes – Theory
An Ion selective electrode is an electrochemical sensor that produces a potential in millivolts between itself and a reference electrode.
Measuring Aluminium Ions
There is no Ion Selective Electrode for Aluminium however due to the strong reaction with Fluoride in solution an indirect method is possible using a Fluoride ISE and some prepared reagents.
EDT Electrodes and Mettler Toledo Meters
Combination ISE’s and pH electrodes are compatible with all meters except for the multiparameter instruments.
Methods of Analysis by ISE
Unlike a pH electrode an ISE is not just dipped into a solution and a direct readout obtained.
Sulphide ISE Reagent Prep
Sodium Sulphide standard solutions can be prepared from reagent grade Sodium Sulphide Hydrate Na₂S.9H₂O. It is advised that all Sulphide solution preparation be performed in a fume hood to avoid breathing Noxious fumes.