Metrohm 884 Professional VA, Руководство - Краткие инструкции

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3.2 Equipping the MME measuring head
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42
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884 Professional VA
Figure 24 Do not touch the drive disk
Use one hand to hold the measuring head arm on the rear and use
the other hand to insert the measuring head into the connector plate
of the measuring head arm.
The measuring head must snap into place with an audible click.
Figure 25 Inserting the measuring head
3.2.4 Connecting the inert gas supply
Generally, nitrogen (N
2
) is used as the inert gas for deaerating the measur-
ing solution and for operating the MME pro. Only nitrogen of sufficient
purity may be used for this.
For general polarography/voltammetry:
￭
4.5 (w(N
2
) = 99.995%)
For analyses in organic solvents; for determinations that result in very high
current strengths (such as for determining the smallest concentrations
without preceding deposition)