Metrohm 746 VA Trace Analyzer - Manual (Page 77)

3 Installation
746 VA Trace Analyzer / 747 VA Stand
3-50
• Put the pipetting handle into the waste beaker so that the pipetting tip is
at about the same level as the container with the solution that should be
pipetted and press the black button on the handle (if you press
at this time, you would have to add the solution manually).
• If the pipetting instruction is carried out for the first time or if the previous
pipetting instruction has been terminated by (see below), the
message Preparing Dosimat #X appears. Press the black button on the
handle.
• After rinsing of the pipetting tubing and formation of an air bubble, the
message
Aspirating standard
appears. Put the pipetting handle into
the desired solution with the pipetting tip immersed ca. 1 … 5 mm and
press the black button on the pipetting handle.
• After aspiration of the solution the message Dispensing solution
appears. Put the pipetting handle into the measuring vessel with the pi-
petting tip touching the wall and press the black button on the handle.
• The desired solution is dispensed into the measuring vessel. Afterwards
the message
Rinsing tube
appears. Put the pipetting tip into the rinsing
quiver installed to the waste beaker and press the black button on the pi-
petting handle.
• The pipetting tip is rinsed with dilution solution. Afterwards the message
Next operation / press to break
appears. If you press the black
button on the handle or , the Dosino will be ready for the next
dispensing instruction, if you press , the Dosino is switched to the
exchange position.