Perlit EP150 Perlit EP150 has a form of a white and grey granulate with the grain size between 0 and 0.2 mm, while only single grains my appear on a 2.00 mm sieve. Its bulk density varies from 50 kg per cu m (Hungarian raw material) to 80 kg per cu m (Slovakian raw material). In most of cases it is applied at the manufacturing of cement and gypsum plaster, but also in other mortars. There are more applications, e.g. vitamin carrier in forage, thermal insulation in vessel coatings and filling empty spaces in ceramic bricks.