This instrument is used for the determination of the paraffin wax content of bitumen and bituminous binder by distillation. It consist of a distillation unit with a 100 ml distillation flask with cork stopper, 100 ml Erlenmeyer flask with a bored cork stopper, glass vessel, gas burner, support stand and adjustable table; refrigerated cooling bath,cover for accommodate: 3 test tubes Ø38×160 mm 29/32 with wash bottle, 3 test tubes Ø38×160 mm with a spout and bored cork stopper, two openings one for solid carbon dioxide and one for thermometer; filtration unit with a 500 ml suction flask, 500 ml glass wash bottle, funnel Ø70×200 mm.