For determination of the loss in mass (exclusive of water) of oil asphaltic compounds when heated as hereinafter prescribed and determination of the effects of heat and air on a film of semisolid asphaltic materials. The effects of this treatment are determined from measurements of selected asphalt properties before and after the test.

Completely made in stainless steel, natural ventilation, internal support (on request) rotating at 5-6 rpm controlled by a geared motor located on the oven top, digital thermoregulator PID with overtemperature alam and probe PT100A, double wall locking door with toughned glass window, internal light.