  Experimental data were used to support a new concept of osmotic force and a
new osmotic law that can explain the osmotic process without the difficulties
encountered with van't Hoff osmotic pressure theory. Derived new osmotic
formula with curvilinear equation (via new osmotic law) overcomes the
limitations and incompleteness of van't Hoff (linear) osmotic pressure
equation, $\pi=(n/v)RT$, (for ideal dilute solution only). The application of
this classical theory often resulted in contradiction regardless of
miscellaneous explaining efforts. This is due to the lack of a scientific
concept like "osmotic force" that we believe can elaborate the osmotic process.
Via this new concept, the proposed new osmotic law and derived new osmotic
pressure equation will greatly complete and improve the theoretical consistency
within the scientific framework of osmosis.
