Metrohm 739 Exchange unit - Manual (Page 34)

1. Setting up
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6.3013.XXX and 6.3014.XXX Exchange Units, 8.110.1346
1. Setting up
1. Remove packing plate below reagent bottle.
2. Mount the 6.2043.005 retaining clips so that the reagent
bottle sits snugly in the Exchange Unit.
3. Make sure that there is reagent in your reagent bottle.
4. Fill the adsorber tube with an appropriate protective reagent
and mount it on the reagent bottle. Use
soda lime (CO
2
Adsorber) for NaOH
molecular sieve (drying agent) for KF reagent.
If you don't need any protective reagent, mount the empty
adsorber tube.
5. Check the tubing connections. If necessary, tighten them
with 6.2739.000 key.
6. Plug Exchange Unit onto the Dosimat/Titrino. Fill the Ex-
change Unit up to the buret tip, pressing keys and
of the Dosimat/Titrino. For 1 mL Exchange Units,
see below.
Experience has shown that small air bubbles do not disturb
as they remain connected to the wall even when the piston
moves quickly.
7. Label your Exchange Unit. Clip the label in its support.
8. Store the buret tip in the plastic tube. You may use the sec-
ond tube for the electrode associated with the reagent.
Filling the 1 mL-Exchange Unit
1. Fill until you see the liquid in the glass cylinder (keys
and of Dosimat/Titrino).
2. Open the tubing connection at the glass cylinder. Fill the
glass cylinder with a syringe.
3. Tighten the tubing to the glass cylinder and fill the Exchange
Unit up to the buret tip.