Two Necks, One Vertical And One At Angle Adapters

Quick answer: This Two-Neck Adapter converts a single-neck flask into a two-opening setup, with one vertical socket and one angled socket, allowing simultaneous access for reagent addition, temperature monitoring, or gas purging alongside a primary reflux or stirring connection. Two Necks, One Vertical And One At Angle Adapters is priced at approximately ₹410 (indicative market benchmark, incl. GST, August 2026).

This adapter fits onto a single-neck flask to add a second access point, with one socket vertical and one set at an angle. This allows a reaction to keep its primary vertical connection for reflux or stirring while the angled socket provides simultaneous access for adding a reagent gradually, inserting a thermometer to monitor temperature, or purging the system with an inert gas. Made from chemically inert borosilicate glass with ground glass joints, it provides an airtight connection suited to multi-step or multi-component organic synthesis procedures taught in college chemistry laboratories.

Technical Specifications

Applications

• Multi-component organic synthesis reactions requiring simultaneous operations
• Adding reagents gradually while maintaining reflux or stirring
• Monitoring reaction temperature via thermometer while running other operations
• Purging a reaction system with inert gas during synthesis

Care & Maintenance

• Grease or fit PTFE sleeves on ground glass joints to maintain a reliable airtight seal
• Clean thoroughly after each use to prevent residue buildup at the joints
• Inspect joints for chips regularly, since a damaged joint compromises the airtight connection

Why Choose STEMAids

STEMAids supplies a wide range of Chemistry Lab Equipments including Economy Calorimeter for related laboratory and classroom needs. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and ISO 9001:2015 certified, supplying schools, colleges and vocational institutes across India and for export.

Frequently Asked Questions

What does this adapter allow that a single-neck flask can’t do alone?

It adds a second access point to the flask, letting a reaction keep its primary vertical connection for reflux or stirring while the angled socket allows simultaneous reagent addition, temperature monitoring, or gas purging.

What joint size does this adapter use?

Exact joint size has not been independently verified for this listing — confirm compatibility with your flask with STEMAids before ordering.

Is this suitable for a college organic chemistry lab?

Yes — two-neck adapters are standard equipment for multi-component reactions taught in organic synthesis coursework.

Can this be used for gas purging during a reaction?

Yes, the angled socket can be used for gas purging while the vertical socket maintains the primary reflux or stirring connection.

Does STEMAids supply matching flasks?

Contact STEMAids to confirm current availability of compatible single-neck flasks for use with this adapter.

Is STEMAids a registered manufacturer of this product?

Yes. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and is ISO 9001:2015 certified. See the About page for full registration and certification details — manufacturer-stated, verify before citing in procurement documents.

Last updated: 29 August 2026.