ISE electrodes unaffected by sample colour or turbidity
February 2015Analytical Instrumentation & Environmental Monitoring
Measurement by ion-selective electrodes (ISE) is particularly useful for the determination of the titration end-point, as they are unaffected by sample colour or turbidity. ISE electrodes are inexpensive and typically the cost per test is very small.
The Orion brand from Thermo Scientific is a world leader in ISE technology and its range of electrodes form the basis of the one analytical technique that gives direct measurement of both cations and anions – common ones like sodium, chloride, potassium, nitrate, calcium, sulphide and many more. Orion electrodes also measure dissolved gases such as ammonia, nitrogen dioxide and carbon dioxide.
Essentially hundreds of different analysers can be made faster and easier through electrode methods, applicable to diverse topics such as sewage treatment, drinking water, food processing, agriculture and biomedical research. Anyone unfamiliar with this branch of analytical chemistry can easily find out more on the subject as Orion provides a variety of publications on the subjects, which can be obtained free of charge from its local agents Labotec.
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