Antec Scientific VT-03, Руководство пользователя

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4 VT03 flow cell user manual, ed. 8
C H A P T E R 1
The electrochemical flow cell
Introduction
The VT-03 flow cell is available with a glassy carbon, platinum, gold, silver
and copper working electrode. In combination with the spacer set (25, 50 and
120 µm) a variety of detection volumes (down to 5 nl) can be attained. As a
standard, the salt bridge Ag/AgCl reference electrode is advised. For special
applications the HyREF
™ reference electrode is available. A third reference
electrode is the in situ Ag/AgCl (ISAAC
™).
Fig. 1. The VT-03 electrochemical flow cell. The upper part, the inlet block, is
separated from the working electrode block by means of a gasket (spacer,
not shown).
The VT-03 electrochemical flow cell has been developed for ultra-trace
analysis in standard, microbore and capillary LC-EC. After extensive testing it
was established that the confined wall-jet configuration gave the very best
results. In addition it was found that the electrode materials quality and the
finishing of the electrodes in the flow cell are decisive factors for the
performance of an EC detector. While competitive designs usually deteriorate
when in use, this flow cell, by design, improves in performance. The flow cell
permits unusually short stabilisation times: trace analysis within half an hour