[en] f₀ (975) meson properties in a vicinity of the KK-bar threshold are studied using the separable potential formalism. The ππ and KK-bar elastic and inelastic cross sections are calculated for the isospin 0 and spin 0 channel. In particular we study KK-bar scattering length, the threshold behaviour of the inelasticity parameter and the branching ratio of the f₀ (975) meson decay. We discuss also the shape of the f₀ (975) lines as a function of the effective mass near KK-bar threshold. A comparison of the theoretical branching ratio with presently available data is done. (author)