Metrohm Multi-Mode Electrode pro - Manual (Page 22)

3.3 Filling in or refilling mercury
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6.1246.120 Multi-Mode-Electrode pro
4 Inserting the needle
Note
Do not touch the needle with bare hands!
Each needle is individually wrapped.
￭ Cut open the wrapper of the new needle with the scissors and
unwrap the white plastic part only. Do not yet completely remove
the wrapper.
￭ Insert the needle into the hole of the membrane and press in as
far as the white marking. Now, remove the wrapper.
5 Inserting the needle holder
￭ Insert the needle holder with the new needle into the MME pro.
Press in as far as it will go.
6 Removing the mounting ring
￭ Remove the mounting ring turning it counterclockwise.
7 Fastening the needle holder
￭ Use the wrench to tighten the needle holder by turning it clock-
wise until the black sealing ring becomes visible in the electrode
body.
3.3 Filling in or refilling mercury
Caution
In this procedure mercury is used. Always carry out the following steps
in a dry drip pan.
Filling in mercury
To carry out this procedure you need the MME pro and the following
accessories:
￭ Drip pan (6.2744.030)
￭ Electrode stand (6.2615.130)
￭ Wrench (6.1247.220)
￭ Syringe (6.2816.020) with needle (6.2816.030)