2 Neck Boiling Flask 2000mL 24/40 Joint 2 Neck Round Bottom Glass Flask Double Neck Lab Che Boiling Bottle Round Bottom Flask Two Neck Round Bottom Flask Angled - Rocco Scientific | Laboratory Lab glass round bottom boiling flask 2-neck 24/40 joints 2000 ml, 1000 ml, 24/40 ; Est. delivery. Thu, Jan 8 - Wed, Jan 14. From Irving, Texas, United States Description Double Neck Round Bottom Flask Double Neck Round Bottom Flasks can be used for a variety of applications such as capturing and collecting material and also used for boiling off material through distillation. These flasks are double neck with a ground 24/40 joint and require the application of vacuum grease to the ground surface when using the flasks in a vacuum application. The... Specification: Material: Borosilicate glass 3., 3 Capacity: 2000ml Joints size: 24/40 Total Length: 25 cm Package Included: 1pcs 2-Necked Round Bottom Glass Flask, Material: Borosilicate glass 3., 3 , Capacity: 2000ml , Joints size: 24/40