Fully Automatic Determination of the Total, Calcium, and Magnesium Hardness of Water Samples by Photometric Titration According to DIN 38406-3

25 Mar 2014
Sarah Thomas
Associate Editor

This Application Note describes the photometric determination of the total, calcium, and magnesium hardness of water samples by using the Optrode (610 nm).

Optrode Sensor for Titration

Metrohm AG

Sensor 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.

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