Tube has a Hi-Vac valve to control flow. The 25 ml and 50 ml tubes have 0 - 3 mm valves, and the 100 ml and 250 ml tubes have 0 - 5 mm valves.
Unit of Measure

Capacity

N/A 100 mL

Overall Height

N/A 235 mm

Stem OD

N/A 13 mm