In titration automation, the dimensions of the sample tray are predetermined but Metrohm has found ways of using the remaining space
The dimensions of the sample tray are predetermined and cannot be altered without a complicated redesign of the sample changer. Metrohm's developers therefore sought ways of using the remaining space on the sample tray in an optimal way.
Why not arrange two or even three rows of sample vessels on the sample tray? In order to move accurately to the individual vessels located in several rows on the sample rack the titration head must be attached so that it is mobile.
This has been made possible by the new 759 Swing Head.
This drive is simply mounted in place of the normal titration head and then moves the new titration head.
Two new types of rack are available for working with the 759 Swing Head.
The first titration rack offers places for 48 sample vessels with a maximum volume of 75 mL each; these are arranged in two rows.
In this case the 759 moves a special titration head to each sample position.
The head can be equipped with a stirrer (722 Propeller Rod Stirrer), up to two microelectrodes, three burette tips and three rinsing nozzles. The complete arrangement fits into the sample vessel and allows standard titrations or even Karl Fischer determinations to be carried out with a sample volume of up to 75 mL.
