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ise_construction [26/09/2019 07:28]
pieter [Principle]
ise_construction [26/09/2019 07:39]
pieter
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 ====== What is an ISE? ====== ====== What is an ISE? ======
 ===== Principle of operation ===== ===== Principle of operation =====
-An Ion Selective electrode can be thought of as a battery when immersed in a solution.   It will develop a voltage relating to the dissolved ion concentration of a particular salt in solution. A properly designed Ionmeter  receives the voltage from the ISE electrode and converts it into a ppm value for display. To be more specific, the circuit compares the voltage from the specific ion electrode to the voltage produced from the reference electrode and displays the difference on the ion concentration meter as a ppm value.+An Ion Selective electrode can be thought of as a battery when immersed in a solution.   It will develop a voltage relating to the dissolved ion concentration of a particular salt in solution. The Ion meter receives the voltage from the ISE electrode and converts it into a ppm value for display. To be more specific, the circuit compares the voltage from the specific ion electrode to the voltage produced from the reference electrode and displays the difference on the ion concentration meter as a ppm value.
  
 ===== Membrane ===== ===== Membrane =====
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 ===== Advantages ISE's ===== ===== Advantages ISE's =====
 Considering all the analytical tools available, why choose ISE’s?  They can be used from 0.1 to 10,000 ppm, have advantages over colorimetric or gravimetric methods, and the electrode bodies are shock-proof and chemically-resistant.  Electrodes, once calibrated, can monitor concentration continuously, analyze the sample within 1 to 2 minutes, and be placed in samples without sample pretreatment or destruction of the sample.  Best of all, electrodes are inexpensive and great screening tools for identifying dissolved salts in samples. Considering all the analytical tools available, why choose ISE’s?  They can be used from 0.1 to 10,000 ppm, have advantages over colorimetric or gravimetric methods, and the electrode bodies are shock-proof and chemically-resistant.  Electrodes, once calibrated, can monitor concentration continuously, analyze the sample within 1 to 2 minutes, and be placed in samples without sample pretreatment or destruction of the sample.  Best of all, electrodes are inexpensive and great screening tools for identifying dissolved salts in samples.
 +===== Sealed or Refillable/Replaceable membranes =====
 +Consort has for all ISE's the option to choose between a sealed version or a refillable version with replaceable membrane. Both versions are similarly constructed as a combination electrode of a double junction reference electrode with a specific Ion sensitive membrane. The main differences are:
 +  * The sealed models contain a gelled reference electrolyte solution that cannot be replaced or refilled, which is possible for the refillable electrodes.
 +  * The refillable models also have a replaceable Ion sensitive membrane allowing to extend the electrode's life.
 +
 +The sealed electrodes will have a durability for the life of either the reference electrode or either the life of the ion sensitive membrane. The life of the replaceable types can be extended when the membranes are worn, not when the reference electrode is polluted or worn.
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 +
  
ise_construction.txt · Last modified: 26/09/2019 07:41 by pieter