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 second neck of this flask can also be used for a thermometer port or for introducing material into the flask with a glass funnel. When laying these flasks down it is always recommended to use a cork stand for the flask to prevent breakage and keep the flask upright. Sizes Available: 500ml - 24/40 Ground Joint 1000ml - 24/40 Ground Joint 2000ml - 24/40 Ground Joint *Notice to customers: All units are inspected for broken glassware or parts before leaving BVV™. If the unit arrives damaged (this does not include minor imperfections or scuffs in glassware), the customer MUST contact BVV™ within 72 hours from carrier delivery to file a claim. If the customer DOES NOT contact BVV™ within 72 hours from carrier delivery, then BVV™ cannot issue any replacement(s) or compensation for the item; a new purchase will need to be made for a replacement. **Glassware Safety Disclaimer: BVV™ is not responsible for failure of glassware which must be inspected before and after every use because it may eventually develop imperfections or damage through normal usage, mishandling, and stress caused by temperature variations. If an imperfection or damage is noted while inspecting the glassware DO NOT use the glassware because it can fail causing bodily harm or damage to the surrounding area.**
