Metrohm 761 Compact IC User Manual
Page 117
4.4 Methods
761 Compact IC
107
Math
Tab
Math
of
Method setup
window with parameters that are used for vari-
ous types of calculations.
Parameter
Selection
of
calculation parameter:
Formula set
Formula setting by customer (
Custom formulae
)
or according either to
European Pharmacopoeia
or
US Pharmacopoeia
.
Theoretical plates
Selection of calculation formula for number of
theoretical plates if
Formula set
=
Custom formu-
lae
is set.
Resolution
Selection of calculation formula for resolution if
Formula set
=
Custom formulae
is set.
Asymmetry
Selection of calculation formula for asymmetry if
Formula set
=
Custom formulae
is set.
Formula
Selection
of
calculation formula for the calcu-
lation parameter selected for
Parameter
. With
Pa-
rameter = Formula set
the following settings are
possible:
Custom formulae
Formula setting by customer.
European Pharmacopoeia
Formula setting according to European Phar-
macopoeia.
US Pharmacopoeia
Formula setting according to US Pharmaco-
poeia.
Void time/volume
Calculation of void time/void volume:
Calculation method
Selection of the method for void time calcula-
tion:
None
Manual entry in the
Void time
field.
1st
component
The peak corresponding to the first component
is selected as a void time marker and its reten-