Metrohm 761 Compact IC User Manual

Page 117

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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-

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