$f_A$ = defined as $\Delta H_{V,A}/\Delta H_{m,B}$, dimensionless

$f_B$ = defined as $\Delta H_{V,B}/\Delta H_{m,B}$, dimensionless

$L$ = mass of the liquid mixture, $\mathrm{g}$

$L_{0 }$ = mass of the initial liquid mixture, $\mathrm{g}$

$L_{f }$ = mass of the final liquid mixture, $\mathrm{g}$

$P$ = pressure, $\mathrm{Pa}$

$P_j^{sat}$ = saturated vapor pressure of component-j, $\mathrm{Pa}$

$P_{tri,j}$ = triple-point pressure of component-j, $\mathrm{K}$

$R$ = ideal gas constant, $8.314\mathrm{J}/\mathrm{mol}-\mathrm{K}$

$S$ = mass of the solid phase, $\mathrm{g}$

$S_{0 }$ = mass of the initial solid phase, $\mathrm{g}$

$S_{f }$ = mass of the final solid phase, $\mathrm{g}$

$T$ = temperature, $\mathrm{K}$

$T_{b,j}$ = boiling temperature of component-j, $\mathrm{K}$

$T_{m,j}$ = melting temperature of component-j, $\mathrm{K}$

$T_{tri,j}$ = triple-point temperature of component-j, $\mathrm{K}$

$t$ = time, $\min$

$V$ = mass of the vapor phase, $\mathrm{g}$

$V_{0 }$ = mass of the initial vapor phase, $\mathrm{g}$

$W_{f,exp}$ = experimental weight of the final product, $\mathrm{g}$

$W_{f,the}$ = calculated weight of the final product, $\mathrm{g}$

$X_j$ = mole fraction of component-j in the liquid mixture, dimensionless

$X_{j,0}$ = initial mole fraction of component-j in the liquid mixture, dimensionless

$X_{j,f}$ = final mole fraction of component-j in the liquid mixture, dimensionless

$Y_j$ = mole fraction of component-j in the vapor phase, dimensionless

$Z_{j,exp}$ = experimental purity of component-j in the final product, dimensionless

$Z_{j,the}$ = calculated purity of component-j in the final product, dimensionless

$\Delta H_{m,j }$ = heat of melting for component-j (>0), $\mathrm{J}/\mathrm{mol}$

$\Delta H_{V,j }$ = heat of vaporization for component-j (>0), $\mathrm{J}/\mathrm{mol}$