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Products by Measurement: Micro Coulometry

Coulometry is the name given to a group of techniques in analytical chemistry that determine the amount of matter transformed during an electrolysis reaction by measuring the amount of electricity (in coulombs) consumed or produced. Coulometric titrations use a constant current system to accurately quantify the concentration of a species. In this experiment, the applied current is equivalent to a titrant. Current is applied to the unknown solution until all of the unknown species is either oxidized or reduced to a new state, at which point the potential of the working electrode shifts dramatically. This potential shift indicates the endpoint. The magnitude of the current (in amperes) and the duration of the current (seconds) can be used to determine the moles of the unknown species in solution. When the volume of the solution is known, then the molarity of the unknown species can be determined.
Total Organic Halides (TOX) / Adsorbable Organic Halides (AOX) by Mitsubishi
Total Organic Halides (TOX) / Adsorbable Organic Halides (AOX) Analyzer (AOX-200)
Model No. Mitsubishi AOX-200
Total Chlorine / Sulfur / Nitrogen by Mitsubishi
Total Chlorine / Sulfur / Nitrogen Analyzer (NSX-2100 HCLS)
Model No. Mitsubishi TOX-300


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