 chromatography
Metrohm is continuously expanding its range of columns
and improving existing separation column types by means
of the latest production methods and materials. This
results in optimized columns with excellent separation
performance, short retention times, high stability and
low cost per injection.
The new Metrosep C 4 separation column can be used for
the determination of the standard cations, of amines and
transition metals. It is available as iColumn, i.e. as an
intelligent separation column, in column lengths of 50
mm, 100 mm, 150 mm and 250 mm. The standard eluent for
the C 4 column is composed of 1.7 mmol/L nitric acid
(HNO3) and 0.7 mmol/L dipicolinic acid (DPA). All the
other standard parameters have also been optimized for
this eluent. This, together with the low standard flow of
0.9 mL/min not only increases the column's lifetime but
also ensures optimal analytical results. Especially for
monovalent cations, the new Metrosep C 4 yields peaks
that are symmetrical and slim. This means improved
resolution and results in lower detection limits.
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