Ion
selective electrodes (ISE) also known as specific ion electrode
converts specific ion into an electrical potential, which is measured
by a pH meter or voltmeter. An ideal ion selective electrode consists
of a thin membrane from which intended ions can be transported.
Polymer membrane electrodes are based on special organic polymer
membrane and are used in electrodes to measure ions such as nitrate,
calcium, and potassium and gas sensing electrodes have an internal
solution and gas permeable membrane. They are used in various
applications for determining the concentration of various ions.
Applications of ion selective electrodes in pharmaceuticals offers
wide concentration range which is applicable to colored and turbid
solutions. In agriculture it is used in soils, fertilizers, and plant
material. It is also used in dairy products, fruit juices, drinking
water, and other drinks and meat preservatives.
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Ion
selective electrodes are simple to use, inexpensive and have an
exceptionally wide concentration range and wide range of
applications. They are unaffected by sample color or turbidity and
are non-contaminated. Under the most favorable conditions they can be
used very easily and rapidly, for example, dragging behind a boat or
simply dipping in lakes or rivers, these factors leads to growth of
ion selective electrode market. However, ion selective electrode have
limited shelf life and are fragile they can be fouled by other
organic solutes or proteins, they sometimes respond to the
uncomplexed ion activity, this leads to fall in the market growth.
Moreover, opportunities exist for ion-selective electrodes in the
field of environmental monitoring and of wearable applications. The
sodium sensor belt consists of an ion selective electrode, which is
selective to sodium, integrated into a platform that is interacted
with the human being body at the time of exercise, due to this no
sweat storage technology is required.
The
Ion selective electrode market is segmented on the basis of type,
application, and region. On the basis of type, the market is
segmented into enzyme electrodes, ion exchange resin membranes,
crystalline membranes, and glass membranes. In analytical chemistry
enzyme electrodes represents significant advancement. These devices
combine the sensitivity and selectivity of enzymatic methods of
analysis with the speed and simplicity of ion selective electrode
measurements. Enzyme electrode is based on the reaction of an enzyme
reacting with specific substrate, these reaction occurs in special
membrane, an example is glucose electrode. Crystalline electrodes are
made from insoluble ionically conducting inorganic salts and they
have good selectivity. In terms of application market is subdivided
into pharmaceuticals, food, and water. Ion selective electrode is
used for food quality control, for example, Nitrate and nitrite in
meat & vegetables, Chloride, sodium, nitrate, and nitrite in baby
food, Fluoride & calcium in milk and other milk products, and
cadmium in fish. In Pharmaceuticals it is used for fluoride & pH
of toothpaste and pH of hair shampoo. In pollution monitoring it is
used in natural waters and in effluents. In terms of region market is
subdivided into North America, Europe, South America, Asia- Pacific,
and Middle East & Africa. Ion
selective electrode market in Asia- Pacific drives a strong
trend of research & development investments in service
industries.
Some
of the major key players operating in Ion selective electrode market
are Thermo Scientific, Metrohm AG, WTW GmbH, Cole-Parmer Ltd., NT
Sensors, SL, Siemens Healthcare Pvt Ltd., Van London Company, HACH,
Weis Research Group, Sensortechnik Meinsberg, and Shanghai
Instruments electric science instruments limited by share Ltd. among
others.
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