Metrohm Multi-Mode Electrode pro - Manual (Page 31)

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5 Maintenance
6.1246.120 Multi-Mode-Electrode pro
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￭ Place the MME pro into the electrode stand.
The mercury refill opening is pointing upwards.
2 Opening the screw cap
￭ Open the screw cap (1-7) at the mercury refill opening with the
wrench and remove it.
3 Filling in mercury
Using the syringe, carefully fill in the mercury into the mercury reser-
voir.
Note
Only fill in mercury until it reaches the making max. fill.
4 Closing the screw cap
Insert the screw cap into the mercury refill opening and fasten it with
the wrench as far as it will go.
5.1.3 Replacing the capillary
Caution
In this procedure mercury is used. Always carry out the following steps
in a dry drip pan.
There are two types of capillaries which can be mounted into the MME
pro, depending on the application:
￭ Silanized capillaries (6.1226.050) are especially suitable for voltammet-
ric determinations at the HMDE in acidic to slightly alkaline solutions
which do not contain organic solvents.
￭ Non-silanized capillaries (6.1226.030) are especially suitable for polaro-
graphic determinations at the DME or SMDE and for voltammetric
determinations at the HMDE in all types of solutions, especially alkaline
solutions with pH>10 or in solutions containing solvents, where silan-
ized capillaries cannot be used.
Replacing the capillary
To replace the capillary you need the MME pro and the following accesso-
ries:
￭ Drip pan (6.2711.030)