Cannon 9724-H65 Model CMVC-9 Size 9 Cannon-Manning Vacuum Viscometer Tube, Calibrated. Cannon-Manning Vacuum Viscosity Tubes are for measurement of viscosity of highly viscous materials such as asphalt cement at 60°C (140°F) according to ASTM D2171. Applicable to materials with viscosity range of 12 to 240 poise. Vacuum of 300 mm Hg is applied to small arm with timing bulbs; two bulbs are incorporated to extend viscosity range of viscometer. Permanently attached round metal holders are included. Viscometers are provided with a certificate of calibration and instruction sheet. Minimum sample volume 6 mL. Require liquid bath depth of 180 mm (7.1").