The Asphalt Institute Vacuum Viscometer, Size 400, 9600-200000 Poise determines viscosity of highly viscous materials such as bitumen at 140°F (60°C). The user measures elapsed time for a fixed volume of liquid to be drawn by vacuum through the graduated capillary tube. Time is multiplied by the viscometer constant to obtain absolute viscosity. Measurement requires a minimum sample size of 3ml and a bath depth of 7in (180mm). Certificate of calibration is supplied with viscometer.
Neoprene rubber holders to fit a 2in (51mm) diameter hole are ordered separately.
Meets Test Methods:
ASTM D 2171