Made to API/ASTM oil testing standards, Robinson’s 100mL 6-inch short cone centrifuge tubes are constructed from clear annealed glass, and feature etched white graduation lines for clear and accurate readings. These 100 part tubes are marked from 0 to 100mL. Tubes are available with the conventional neck opening to accept a cork style stopper (corks sold separately), or with a threaded neck to take a screw style cap (screw caps included).

As an added option, tubes can come factory verified or third-party certified. Factory verified tubes are accompanied by a certificate of accuracy. Certified tubes are volumetrically checked by an independent third-party laboratory according to API standards and come with a certificate depicting volume corrections at each checkpoint. (additional charges apply)

Divisions of Graduation:

• 0 to 0.5mL in 0.05mL
• 0.5 to 2mL in 0.1mL
• 2 to 3mL in 0.2mL
• 3 to 5mL in 0.5mL
• 5 to 10mL in 1mL
• 10 to 25mL in 5mL
• and at 50, 75, and 100mL