Metrohm 711 Liquino - Manual (Page 42)

3.2 Tutorial
711 Liquino, Instructions for use 36
di l ut i on vol . 3 mL
• The dilution volume is the amount of solvent to be added to the meas-
uring cell after the sample has been transferred there (in the example 3
mL). Press to accept the value.
Di spl ay: >SMPL sampl i ng oper at i on
sampl e r i nse vol . 3 mL
• Before the actual sample transfer the Dosino cylinder is rinsed with the
sample. This rinsing volume should be about the same as the transfer
amount (in the example 3 mL). For a multiple determination, in which
the same sample is always used, this volume can also be smaller.
Press to accept the value.
Di spl ay: >SMPL sampl i ng oper at i on
sampl e r i nse r ep. 1
• Enter how often the cylinder is to be rinsed with the sample. If samples
are being transferred which do not greatly differ from one another 1
rinse is sufficient. Press to accept the value.
QUIT
NO
• As the remaining parameters in this submenu can be left at their preset
values it can be exited with the key.
Di spl ay: par amet er s
>SMPL sampl i ng oper at i on
J
• The next submenu is accessed with <>.
Di spl ay: par amet er s
>SMPL meas. cel l r i nsi ng
• Press to open the submenu ‘SMPL meas.cell rinsing.
Di spl ay: >SMPL meas. cel l r i nsi ng
ext er nal Pump: of f
• The cell can also be rinsed with external pumps. However, the same
Dosino is to be used here. Press to accept the default val-
ue ‘off’.
Di spl ay: >SMPL meas. cel l r i nsi ng
r i nsi ng r epet i t i ons 1
• Enter the number of times that the measuring cell is to be rinsed. As
this process takes a considerable time this value should be kept as low
as possible. In this example 1 rinse is sufficient. Press to
accept the value.
Di spl ay: >SMPL meas. cel l r i nsi ng
aspi r . vol ume 40 mL
• The suction volume corresponds to the sample volume + dilution vol-
ume (solvent) + titrant consumption. The value must be so large that
the measuring cell is completely emptied after the titration. In this case
the total volume amounts to 40 mL. Press to accept the
value.
Di spl ay: >SMPL meas. cel l r i nsi ng
aspi r . r at e max mL/ mi n
• This setting is left at ‘max’. It only requires alteration for viscous liquids.
Press .