Dispensing Liquid - BRAND HandyStep touch Operating Manual

b.
During aspiration, make sure that the tip opening is always covered by liquid, in order to prevent
air bubbles in the tip.
c.
Press the STEP button.
The tip is filled until the set volume or the nominal volume is reached.
Reverse stroke (play compensation)
During filling, the device performs a reverse stroke, which guarantees accuracy of the STEP volume
setting. This way, the first STEP does not have to be discarded.
7.10.2 Interrupting filling of the tip
a.
To interrupt filling of the tip, press the STEP button.
ð
Filling is suspended immediately. You can dispense the aspirated volume again with the STEP
button, drain the tip or resume the filling process.
7.10.3 Filling a partially drained tip
a.
Reverse stroke (play compensation)
During filling, the device performs a reverse stroke, which guarantees accuracy of the STEP volume
setting. This way, the first STEP does not have to be discarded.
7.10.3.1 Automatically switching to filling
After dispensing all of the requested STEPs, liquid with a volume of less than 1 STEP remains in the tip
(residual volume). The device automatically switches into the filling mode that will allow you to refill
the tip.
a.
Press the STEP button 2 times in quick succession.
ð
Liquid is aspirated until the tip is completely filled.

7.11 Dispensing liquid

7.11.1 Dispensing volumes or individual STEPs
Prerequisite:
>
An operating mode has been selected.
>
A volume has been aspirated.
HandyStep® touch, HandyStep® touch S 997486
NOTICE
a.
Switch to refill.
b.
Hold the tip vertically in the liquid.
c.
Press the STEP button 2 times in quick succession.
ð
The liquid is aspirated until the nominal volume has
been reached.
d.
To stop filling the tip, press the STEP button.
ð
The operating mode appears again. You can continue
dispensing.
NOTICE
7 Operation
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Operating manual