Metrohm 850 Professional IC Anion MCS Prep 2 - Manual (Page 21)

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2 Installation
850 Professional IC – Anion – MCS – Prep 2
￭￭￭￭￭￭￭￭ 11
For this, a small, defined sample amount is measured at an additional
injection valve (2-14) and pumped with a transfer solution (ultra pure
water) to the preconcentration column (2-19) at the injection valve (2-7).
The sample is retained by preconcentration column, while the matrix is
rinsed into the drain with the transfer solution. After a predefined time,
the injection valve (2-7) is switched to and data recording is star-
ted. The sample retained on the preconcentration column (2-19) is now
rinsed with the eluent onto the separation column.