Round-bottom Flask
Product Code : SCL-CL-11910
Round-bottom Flask (SKU SCL-CL-11910) is a boiling flask with a spherical body and a 14/29 joint, made from heat- and chemical-resistant material. The rounded shape spreads heat evenly, so the flask is the usual vessel for heating, distillation and reflux in chemistry labs. Colleges, schools, training institutes, tender contractors and distributors can obtain it from Science Lab Supplies, which supplies it from Ambala, India.
Specifications
The flask has a round body and a neck finished to the 14/29 joint size, so it connects directly to condensers, adapters and other fittings of the same standard taper. Its heat- and chemical-resistant material is suited to boiling liquids and handling common laboratory reagents.
| Parameter | Value |
|---|---|
| SKU | SCL-CL-11910 |
| Model no. | SCI/LSS-1623 |
| Also known as | RB flask, boiling flask |
| Joint (section) size | 14/29 |
| Material | Heat- and chemical-resistant |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Round-bottom Flask
A round-bottom flask is heated in a mantle or bath while its joint carries a condenser for distillation or reflux. It is core glassware for Class 11–12 organic chemistry demonstrations, B.Sc. and B.Pharm. synthesis practicals, and chemical-technician training that covers distillation and purification.
- Simple distillation: boiling a liquid under a Liebig condenser to separate it from dissolved solids.
- B.Sc. organic chemistry: heating a reaction mixture under reflux.
- Solvent recovery: distilling off a solvent after an extraction.
- Technician training: assembling joint-connected glassware safely.
Always rest the flask in a ring or cork stand and clamp it at the neck, add boiling chips before heating, and never fill it more than about half full for distillation.
Standard Scope of Supply
Each Round-bottom Flask is supplied as one flask with a 14/29 joint, as described above. Condensers, adapters, heaters and clamps are not included; they are listed separately and can be quoted with the flask for a complete assembly.
Packing, MOQ and Lead Time
You may ask for one flask or a full set for a distillation lab. The quotation states packing, delivery time and price for the quantity requested, and a condenser, adapter and heater with matching joints can be placed on the same quote.
Backed by an Importer-Exporter Code, Science Lab Supplies is able to ship to buyers in Oman, the Philippines, Nepal, Bangladesh, Zambia and Rwanda. Send requirements through the enquiry cart or the contact page, and see the lab tender page when buying through a tender.
Frequently Asked Questions
What joint size does the flask have?
It has a 14/29 joint, so it fits the 14/29 Liebig condenser and adapters in the same range without sleeves or reducers.
What capacity is the flask?
The listing does not state a capacity. Tell us the volume you need through the contact page and the quotation will confirm the size supplied.
Why use a round-bottom rather than a flat-bottomed flask for heating?
The spherical shape spreads heat evenly and withstands boiling better, which is why it is chosen for distillation and reflux.
Who supplies the Round-bottom Flask?
Science Lab Supplies supplies it from Ambala, India, as part of its laboratory distillation apparatus in India range for schools, colleges and tenders.
Related Distillation Glassware
The flask is the starting point of a distillation or reflux train, followed by a condenser and adapter and heated by a flask heater. These four Chemistry Lab items build that train and can be quoted on one enquiry with the flask.
- Liebig Condenser for Distillation of Water — 450 mm condenser with 14/29 joint size.
- Flask Electric Heater — heats the flask during boiling.
- Adapter (Alunge) — connects the condenser to the receiver.
- Round Bottom Pots (Spherical Flasks) — another spherical flask listing.
Browse the full Chemistry Lab range or all school lab equipment.
Last updated: 25 September 2026
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