Thermodynamic consistency calculations on Internet

The aim of the thermodynamic consistency test is the examination of corresp ondence between the basic thermodynamic equations and a given calculation o f measured data. In this test we have to face the problem of choosing an ap proximating function that causes negligible error with respect to the error s of measured data. We discuss the different solutions of Vapour Liquid Equ ilibrium and Speed of Sound data testing focused on numerical mathematics a nd information technology. We present - as Internet downloadable files: res ults of general formal algebraic calculations, software and thermodynamic e xamples - the application of our newly developed numeric approximation meth od, minimal energy Bezier surfaces over triangles and rectangles. The appro ximated surfaces are depicted by an own developed PASCAL graphic software t hat can be downloaded, as well.