# Three main packages
- isofit
- simide
- simsep

# isofit
- find_par(isofn, n_par, P, q, methods)
- best_isomodel(P, q, iso_par_nums, iso_fun_lists, iso_fun_index, tol)
- fit_diffT(p_list, q_list, T_list, i_ref, iso_par_nums, iso_fun_lists, iso_fun_index, tol)
- IAST(isotherm_list, P_i, T)

# simide
- Class: IdealColumn

# simsep
- Class: column

