This instrument is designed and made as per standards T 0615-2011 Wax Content Test for Bitumen by distillation in JTG E20-2011 Specification and Test Methods of Bitumen and Bituminous Mixture for Highway Engineering and SH/T0425 Standard Test Method for Wax Content Test of Bitumen. It is used to determine the wax content in the petroleum asphalts by cracking distillation.