Operation; Dispensing - BRAND seripettor Operating Manual

5 Operation

b.
5 Operation

5.1 Dispensing

Follow during every use, especially with hazardous media
> Wear protective clothing, eye protection and appropriate hand protection!
> Never press down the piston when the screw cap is screwed on!
> Avoid splashing the reagent!
> To avoid splashes dispense slowly.
> Liquid may accumulate in the screw cap. Open the screw cap slowly in order to pre-
> Follow all safety instructions and comply with the operating exclusions and limita-
1. Selecting the volume
Liquid is dispensed when setting the volume!
a.
48
Operating manual
30 mm
vent splashing.
tions of use; see Limitations of use and Operating exclusions, p. 41.
b.
To avoid splashes, hold discharge tube orifice on the in-
ner wall of a suitable receiving vessel.
For priming, let the piston move up approx. 30 mm and
push it down rapidly until the lower stop.
Repeat this procedure approximately 5 times until there
are no more air bubbles under the piston. Bubbles less
than 1 mm are permitted.
Before using the instrument for the first time, ensure it is
rinsed carefully and discard the first few samples dispensed.
Avoid splattering.
WARNING
NOTICE
a.
Hold the discharge tube and remove the closure cap/
screw cap.
b.
Hold the discharge tube orifice on the inner wall of a
suitable receiving vessel.
c.
With one hand, press the actuating unit downward and
hold it.
d.
Place the receiving vessel under the discharge tube ori-
fice.
e.
Loosen the volume selector thumb screw by a half turn,
slide the pointer vertically to the desired volume and re-
tighten the volume thumb screw.
NOTICE
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