Metrohm 851 Titrando - Manual (Page 32)

3.5 Titration vessel for coulometric KF titration
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851 Titrando
3.5.2 Coulometer cell – Standard setup
Filling the adsorber tube
Before setting up the coulometer cell the 6.1403.030 adsorber tube has
to be filled with 6.2811.000 molecular sieve. Proceed as follows:
6.1403.030
6.2811.000
1
2
3
4
Figure 13 Filling the adsorber tube
1 Insert a small cotton plug into the bottom of the adsorber tube. Do
not pack the cotton too tightly.
2 Fill the molecular sieve up to ¾ of the height.
3 Place a small cotton plug on the molecular sieve. Do not pack the
cotton too tightly.
4 Seal the adsorber tube with the appropriate cover.
NOTE
Note that the molecular sieve must be replaced at regular intervals.
Each time you refill the adsorber tube with molecular sieve, you can, for
example, write the date directly on the adsorber tube.