Preparation For Operation - HTL DISCOVERY PRO DP2 Manual De Instrucciones

A B
Fig. 2
The range of aspirated volume is displayed on the
counter cap (fig.1G). The volume is displayed by the
counter and consists of four digits, which should be read
from top to bottom. The digits on the lower drum consti-
tute minimum graduation for the particular model. Value
of the minimum graduation (increment) is presented in
Table 1.
Volume can be changed after choosing the upper posi-
tion of the knob (fig. 2A and 2B).
After setting the desired volume, the knob (fig.1B) should
be locked by pushing into the lower position (fig. 2C).
Examples of counter indications:
0.1-2 μl 2-20 μl
0.1 μl 2 μl 2 μl
Counter indications above the horizontal indicators
shown volume in [μl].
To achieve maximum accuracy, the required volume
should be set from higher volume by reducing indica-
tions of the counter.
5
C
100-1000 μl
20 μl 100 μl 1000 μl
Example of correct volume setting:
• If the required volume is lower than
the volume set on the counter it is
necessary to reduce indications of
the counter to the required value.
Before achieving the required value it
is necessary to reduce the speed
with which you rotate the adjustment
knob (fig.1B), so as not to exceed the
value (fig. 3).
• If the required volume is higher than the volume set on
the counter it is necessary to increase indications of the
counter to the value which exceeds the required vol-
ume by rotating the bottom drum by about 1/3 of its cir-
cumference. Then, by slowly rotating the adjustment
knob (fig. 1B), reduce the setting to the required value
(fig. 3).
After setting the required volume, the knob (fig. 1B) should
be moved downward to lock the set volume (fig. 2C).
CAUTION: The calibration switch (fig. 1E) which is above
the counter should remain in the lower position during
operation. Otherwise, each change of capacity will result in
decalibration of the pipette.

2.2. PREPARATION FOR OPERATION

Place a tip on the shaft of the pipette. See Table 1 for the
appropriate tip designed for the given pipette model.
Firmly press the tip on the shaft using twisting motion to
ensure airtight seal.
CAUTION:
• It is recommended to use the tips recommended by
the manufacturer, as only those tips will ensure accu-
rate and repeatable liquid measurements.
• Do not place tips by applying swinging motion, as this
can damage the shaft and the plunger. It is particularly
applied to small-volume pipettes.
• Never aspirate liquid into a pipette without a tip
attached.
ENGLISH
Fig. 3
6