Gilson 402 User Manual page 54

Operation - Advanced Use
(c) Left-hand Syringe
Aspirating from Probe
From Tee
Left piston
descends
to aspirate
(d) Right-hand Syringe
Aspirating from Probe
Valve switched
to Reservoir
Left piston
remains
inactive
(e) Right-hand Syringe
Dispensing to Probe
Valve switched
to Reservoir
Left piston
remains
inactive
5-4
From Probe
Right piston
remains at
the top
From Probe
Right piston
descends to
aspirate
To Probe
Right piston
ascends to
aspirate
Aspirating Large Volumes via the
Probe
1. The valve switches to connect the left-
hand syringe to the Tee-junction and
probe.
2. The piston of the right-hand syringe
remains in the top position to prevent
liquid from entering the syringe.
3. The left-hand piston descends to
aspirate the specified volume of sample
liquid.
Aspirating Small Volumes via the
Probe
1. The valve switches to connect the left-
hand syringe to the reservoir, thus
disconnecting the left-hand syringe
from the right syringe.
2. The piston of the left-hand syringe
remains in the top position.
3. The right-hand piston descends to
aspirate the specified volume of sample.
Right-hand Syringe Dispensing to
Probe
1. The valve switches to connect the left-
hand syringe to the reservoir, thus
disconnecting the left-hand syringe
from the right-hand syringe.
2. The piston of the left-hand syringe
remains in the top position.
3. The right-hand piston ascends to
dispense the specified volume of
sample.
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