Eppendorf Varispenser 4962 - Manual (Page 35)

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– Hold a suitable vessel below the
discharge tube outlet.
– Set the valve toggle to ”recirculation”.
– Pull up the piston slightly and push
down quickly. Repeat this motion in
the lower filling area of the cylinder
until air bubbles have disappeared
from the cylinder.
– Set the valve toggle to ”dispensing”
and pull up piston to prime the
discharge tube.
Caution: Be careful of chemicals
dripping off the discharge tube.
Note: Before using the instrument
for the first time, ensure it is rinsed
carefully or discard first few samples
dispensed.
8.2. Dispenser with recirculation valve