Automated Photometric Determination of Lead using Metrohm’s Optrode Sensor
13 Jul 2015This application note describes the use of Metrohm’s Optrode Sensor for titration, with photometric endpoint recognition in the determination of lead in an aqueous solution at pH 4 to 5 by back-titration with zinc sulfate. The equivalence point is detected with the Optrode at a wavelength of 574 nm.
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Optrode Sensor for Titration
Metrohm AGSensor for titration with photometric endpoint recognition. Eight wave lengths: 470, 502, 520, 574, 590, 610, 640 and 660 nm 100% solvent-resistant due to glass shaft Compact and space-saving Very easy to clean Easy to change the wave lengths Both new and existing titration systems can be furnished with the optrode. The power supply is provided directly through the USB interface of a Metrohm instrument (Titrino plus, Ti-Touch, Titrando, USB sample changer). With older models without a USB interface, the power supply can also be provided by means of an optional USB power supply unit.