Metrohm 711 Liquino - Manual (Page 108)

4.7 PIP mode - precise pipetting and diluting
711 Liquino, Instructions for use 102
Pipetting with the pipetting equipment
In principle the procedure of pipetting with the aid of the pipet handle is the
same as described above. The necessary key operations (<START> and
<ENTER>) can be carried out with the start button on the handle. Ready
messages from the Liquino are indicated by the green pilot lamp on the
handle lighting up. Pressing the start button triggers a switching impulse via
the remote cable so that the complete pipetting procedure can be con-
trolled from the pipet handle.
• After preparing the dosing unit (with <PREP>) press the start button on
the handle. The request for the pipetting volume should have been
switched off previously (in the parameter menu under '<PIP selection').
• As soon as the pilot lamp lights up remove the pipet tip from the vessel
in order to aspirate the separating bubble. Then press the start button on
the handle.
• When the pilot lamp lights up again immerse the pipet tip in the sample
and press the start button again. The sample volume is aspirated. The
pilot lamp lights up again.
• The start button can now be used to discharge the sample (and any dilu-
tion volume) into the target vessel.
• If no dilution volume has been entered the pilot lamp lights up again.
Discharge the separating bubble into a waste beaker by pressing the
start button again.
• When the pipetting process is complete the pilot lamp no longer lights
up. The next pipetting process can now be started by pressing the start
button. When the pilot lamp lights up the separating bubble can be aspi-
rated, and so on.