The instrument is based on industry standards People's Republic of China JTG E20-2011 "Highway Engineering asphalt and asphalt mixture test procedures" in T 0618-1993 "Asphalt chemical composition test (four-component method)" design and manufacture of this instrument，the instrument uses the solvent precipitation and chromatography column method to analyze the road stone asphalt four components analysis.

1. Vacuum drying oven: a vacuum of 267Pa (2㎜Hg);

2. High temperature furnace: 0 ℃ ~ 1000 ℃, there is an automatic temperature controller;

3. Constant temperature bath: HWY-501 circulating water bath (recommendation);

4. Balance: Weighing 500g, the sense of it not more than 1g, 1mg, 0.1mg one for each.