Cleaning; Basic Cleaning - BRAND seripettor Operating Manual

8 Cleaning

8 Cleaning
Components filled with reagent
The cylinder, valves, telescopic filling tube and discharge tube contain reagent!
> Never remove the discharge tube while the dispensing cylinder is filled.
> Point the valves and tube openings away from your body.
> Wear protective clothing, eye protection and protective gloves!
The instrument must be cleaned in the following situations to assure correct operation:
•
immediately when the piston is difficult to
move
•
prior to a reagent change
•
prior to long term storage
•
prior to dismantling the instrument
•
prior to changing the valve

8.1 Basic cleaning

1. Completely emptying the instrument
a.
Screw the instrument onto an empty bottle and empty it completely by dispensing. If the instru-
ment is equipped with a recirculation valve, it must be emptied in both the 'dispense' and 'recir-
culate' settings.
2. Rinsing the instrument
a.
Screw the instrument onto a bottle filled with a suitable cleaning agent (e.g. deionized water)
and rinse the instrument several times by completely filling and emptying it.
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Operating manual
WARNING
•
prior to autoclaving
•
regularly when using liquids which form de-
posits (e.g., crystallizing liquids)
•
regularly when liquids accumulate in the
screw cap.
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