The main aim of project was correlation between different methods used for estimation of stone dust quality in unbound aggregate mixtures for road subbases. The program builds on the six unbound mixtures 0-31,5 (basalt, dolomite, gabbro, granite, melaphyre and limestone). Sand equivalent test was executed on the fractions 0-2 mm and 0-4 mm after five times crumbling in Proctor apparatus. The solution for sand equivalent test will be prepared according to Polish and European standards (reagents used for preparation of concentrated solution are the same in both cases, but there are different proportions). On this basis it can be concluded if both test (according to PN and PN-EN) give similar results. In many of the technical specifications, the sand equivalent test is still required according to old Polish standard, which has been replaced by PN-EN. In PN-EN 933-8:2012 there is another method of preparation of the sample than in 2001 edition.