Metrohm 739 Exchange unit - Manual (Page 36)

3. Buret tips
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6.3013.XXX and 6.3014.XXX Exchange Units, 8.110.1346
3. Buret tips
You receive the following buret tips as standard accessories:
Tip with anti-diffusion valve.
Use it if you immerse the tip, e.g. for titrations.
6.1543.050
Open tip.
Use it if you do not immerse the tip, e.g. for
dosing.
6.1543.060
It is best to store the buret tip in the same solvent as the reagent
to prevent crystallization of reagent: Fill plastic tube with solvent,
set buret tip in bulb stopper. For KF reagent: Use methanol as
solvent.
Important:
Check that the buret tip is not blocked before dosing.