XXXV international conference on plasma physics and CF, February 11 – 15, 2008, Zvenigorod. ANALYTICAL EQUATION OF STATE OF MIXTURE OF HYDROGEN ISOTOPES T.V. Soboleva, V.A. Shcherbakov RFNC-VNIIEF, Sarov, Russia Given here are the formulae which give sufficient representation of the physical processes in the material, and define the equation of state of mixture of hydrogen isotopes over the wide range of density and temperature. The mathematical program has been developed to define pressure and specific internal energy at any specified density and temperature using given formulae. 1