Location:
Report Variable (Peak Results)
Default:
Use the current value from the peak table
Related Variables:
Description:
The k´ peak result variable refers to the capacity factor (also called retention factor (Rf)), that is, to the ratio of the net retention time to the dead time.
Where
|
k' |
= Capacity factor |
|
tR |
= Retention time |
|
t0 |
= Dead time |
The Dead Time may either be measured at the inert peak or calculated as the quotient of the dead volume and the flow rate. If the dead time is zero, k' is not calculated.
To achieve a reasonable compromise between the retention time and the required analysis time, k´ should be a value between 1 and 5.
Parameters:
In order for Chromeleon to calculate the Capacity Factor K`, the system dead time must be specified.
Dead Time
Enter the dead time (in Decimal Minutes) in the Dead time field. If you do not enter a dead time, the dead time entered on the 
General tab page of the QNT Editor is used to calculate the capacity factor.