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The sugar analysis is performed with MIC-8+Dialysis.
The system is equipped with the Metrosep
Carb 1 - 250 sugar column; a sodium hydroxide eluent
and a pulsed amperometric detector are used. For the
analysis of protein-containing samples a dialysis unit
is used for the inline sample preparation. Unskimmed
milk, yoghurt, baby food and dairy-industry intermediates
(protein concentrates, milk powder, chocolate milk powder)
are analyzed.
The patented stopped-flow method allows to achieve a
practically complete dialysis. This means that after
a dialysis time of 14 min the acceptor solution has the
same analyte concentration as the sample (equilibrium
dialysis). Read more about Metrohm
Inline Dialysis as one variant of Metrohm Inline
Sample Preparation (MISP).
The inline sample preparation procedure occurs in 4
steps
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Dialysis
of the sample (with flowing sample and stationary acceptor
solution)
Transfer
of the acceptor solution, which now contains the analyte,
into the injection valve with flowing sample and acceptor
stream
