Round Bottom Flask with three necks, vertical sockets

Round Bottom Flask with Three Necks - Vertical Sockets

When you're running complex reactions that need multiple simultaneous connections, you need reliable glassware that won't limit your setup options. Our Flasks/round-bottom-flask-with-three-necks">three-neck round bottom flasks with vertical socket configuration give you the access points you need without the awkward angles that slow down your work.

Vertical Socket Design for Optimized Laboratory Space Efficiency

All three necks point straight up on these flasks, which makes a real difference when you're working under a fume hood or in tight bench spaces. Unlike angled neck designs, vertical sockets let you position your condensers, addition funnels, and thermometer adapters without fighting for clearance. The borosilicate glass construction handles thermal shock better than standard glass, so you can go from ice baths to heating mantles without worrying about cracks.

Each neck features precision ground glass joints in standard tapers—14/20, 19/22, and 24/29—that seal properly with your existing equipment. Available volumes range from 25ml for small-scale synthesis up to 2000ml for pilot batches.

Upward-Facing Port Configuration Benefits

• Easier assembly: Drop in stirring shafts and thermometers without tilting or adjusting angles
• Better stability: Vertical weight distribution reduces tipping risk when multiple accessories are attached
• Simplified addition: Pour reagents through addition funnels with direct vertical access
• Compatible with standard clamps: Mount securely on support stands without custom positioning

If you only need two access points, the Round Bottom Flask with two necks offers similar vertical advantages with a more compact footprint.

Ideal Applications for Vertical Neck Arrangements

Reflux reactions benefit most from this configuration—center neck for your condenser, one side for reagent addition, and one for gas inlet or pressure equalization. Vacuum distillations work smoothly when you need to monitor temperature while maintaining vacuum through separate ports.

We use these constantly for multi-step organic synthesis where you're adding reagents dropwise while monitoring temperature and maintaining inert atmosphere. The vertical setup also works well for gas purging operations where you need nitrogen or argon flowing through while still accessing the reaction mixture.

For filtration after your reaction completes, pair with a Filter funnel with glass disc or transfer to a Buchner Flask with socket for vacuum filtration.

Equipment Compatibility and Assembly Considerations

These flasks sit perfectly in standard heating mantles and work with magnetic stirrers without modification. The uniform wall thickness distributes heat evenly, preventing hot spots that can decompose sensitive compounds.

When space is extremely limited, consider a Flask pear shape for single-neck applications, but you'll sacrifice the multi-port functionality. For specialized geometries with three necks, the standard Round Bottom Flask with three necks with angled side ports might suit reactions where you need offset access, though vertical sockets generally offer more flexibility.

Pro tip: Always check joint taper compatibility before assembling your setup—mismatched tapers leak under vacuum and waste your time re-sealing connections.