Hach-Lange TENSETTE plus User Manual - Handbuch (Seite 25)

Operation
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8. Withdraw the tip from the liquid touching it against the edge of
the reservoir to remove excess liquid. Press the trigger again to
aspirate the air buffer.
9. Dip the tip under the surface of the second liquid and press the
trigger. The second volume is drawn in to the tip.
10. Withdraw the tip from the liquid.
11. To deliver the both volumes, press the trigger. MIX is displayed.
12. By pressing the trigger the pipette starts to pipette ca. 70% of the
total volume several times as long as the trigger is held pressed.
13. After releasing the trigger the pipette stops after next dispensing
and BLOWOUT is displayed.
14. Withdraw the tip from the liquid and press the trigger and hold it
down to empty the tip.
15. Release the trigger to return to the ready position.
Change the tip and continue pipetting.
4.7.5 MANUAL
With manual mode it is possible to measure volumes. In manual
mode only slower speeds are available to ensure a quick stop.
1. Select PROGRAM → EDIT, then select with the scroll key
MANUAL and accept with OK.
2. Then select a limit for the total volume, the default is the
maximum volume.
3. Select the pipetting speeds. 0.00 is then displayed.
4. Fill a clean reagent reservoir with the liquid to be dispensed.
5. Dip the tip under the surface of the liquid in the reservoir and
press the trigger. The liquid is drawn in to the tip and the actual
volume is shown on the display.
6. The pipetting direction can be changed with the IN/OUT key (left
selection key Figure 2 Pipette operation on page 15 , item 6 ).
7. To deliver the liquid select the OUT key (down direction) and
press the trigger.
8. To deliver the rest of the liquid, press the trigger and hold it down
and hold it down to empty the tip completely.
Change the tip and continue pipetting.
Note: The volume display can be reset to zero at any time by pressing RESET
with the right selection key
Figure 2 Pipette operation on page 15 , item 3 .