where (t"o) is the kinetic dead time, ( Plate Theory and Extensions)
(k") is the kinetic capacity ratio.
The kinetic dead time and the kinetic capacity factors are calculated from the kinetic dead volume as opposed to the thermodynamic dead volume
Then from
(7), 
where (Ds) is now the solute Diffusivity in the stationary phase..
However, in this
case, over the time period (tr), a fraction of time 
is
spent by the solute in the stationary phase and, thus,
