Barium Analysis by Automated Photometric Titration
Barium Analysis by Automated Photometric Titration
10 Dec 2015Because of its high chemical reactivity barium is never found in nature as a free element. Barium can be determined in alkaline media by direct titration with EDTA. Phthalein purple is used as indicator; the equivalence point is determined 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.