For determining bitumen percentage in Bituminous paving mixtures. Bitumen Extraction Test Apparatus has a removable, precision machined, aluminium rotor bowl, mounted on a vertical shaft. A filter paper disc is pressed in-between the rotor bowl and cover plate by tightening a knurled nut. The bowl assembly is enclosed in a housing operating model; the rotor bowl is coupled to a motor. The solvent may be introduced during test through a cup on the housing cover. The apparatus is supplied complete with a Pack (50 Circles) of Filter Paper.