Now from the Plate Theory (See Plate Theory and Extensions),
| where (Vr) | is the retention volume of the solute, |
| and (n) | is the column efficiency. |
Thus, 
(16)
Now, also from the Plate theory,
Vr = Vo(1 + k') (17)
| where (Vo) | is the column dead volume, |
| and (k') | is the capacity ratio of the solute. |
