Figure 1.

Rate of change of osmotic pressure with dilatation, Π, as a function of (a) c^* and (b) $c_r^F$ [Eq.(23)]. $H_{\pm A}^{\mathit{eff}}=H_{\pm A}+\mathrm{\Pi }$ and ${\lambda }_2^{\mathit{eff}}={\lambda }_2+\mathrm{\Pi }$ can be obtained by offsetting the response of Π with the appropriate constant.