Manual

15
Since this adjustment affects the entire measuring rang, it is imperative to check
the other volumes of this pipette specified in the technical data.
Next, close the adjustment opening with one of the supplied calibration seals.
5.2.3 Adjustment for liquids with a density different to that of water
It is possible to adjust one specific volume of liquid with a density different to
that of water in such a way that the volume displayed corresponds to the volume
pipetted.
All other values for the adjustable pipettes are now out of alignment, i.e. an
adjustable-volume (variable) pipette has been converted into a fixed-
volume pipette!
Proceed as described in steps a) to g) of Section 5.2.2.
A pipette set in this way delivers a pipetting value that correlates with that
in the display
only for the liquid used and for the volume tested ! For
this reason, we recommend labeling the converted pipette as a
fixed-
volume pipette
for "Solution y"!
The error for liquids with a higher vapor pressure (e.g. organic solvents) cannot
be aligned in this way. In this case, we recommend using an Eppendorf positive-
displacement pipette.
6.1 Care
Depending on the frequency of use, all pipettes should be cleaned in a soap
solution or should be carefully wiped clean using isopropanol. They should then
be rinsed in distilled water and dried.
The seals are maintenance-free and the pistons should be lubricated lightly
(using the silicone grease provided) when cleaned or replaced.
With the multi-channel model, the visible O-rings on the tip holder should be
lightly lubricated after cleaning and then wiped using a lint-free cloth. Defective
O-rings must be replaced (see Part B, "Maintenance").
Severe contamination caused by the liquid entering the pipette can be removed
after the pipette has been disassembled (see Part B, "Maintenance").
6 Care / sterilization
Research – Part A – Sections 5 and 6
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