7.3 Filling the pipet
– Immerse the tip of the pipet into the
liquid.
– Move the pipetting lever (4) upwards.
– Fill the pipet to just above the desired
mark.
Attention!
Do not over aspirate and allow any liquid
to enter the instrument.
This would impair the filtering function (5)
and reduce the suction capacity. If liquid
does enter the instrument, exchange the
membrane filter (5) (pages 27-29).
Note:
– The fill/delivery rate is continuously
variable with the upward/downward
pressure on the pipetting lever.
– In the case of large pipettes
> 50 ml the vacuum contained in the
suction bellows (1) is not sufficient to
draw in all the liquid at once. There-
fore, squeeze the suction bellows (1)
again and continue drawing up liquid.
7.4 Adjusting the meniscus
– Use a suitable tissue to wipe the pipet tip.
Push down the pipetting lever (4) slowly
until the meniscus is exactly level with the
desired mark.
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