Round Bottom Flask 250 ml Manufacturer,Supplier and Exporter in India

Round Bottom Flask 250 ml (Product Code: SCI-1644/017) is a spherical borosilicate glass flask used to heat, boil, reflux and distil liquids evenly in chemistry laboratories. Its 250 ml capacity suits student-scale preparations, and it is fitted with an interchangeable polypropylene stopper for closing the flask between steps, a staple of borosilicate glassware for school and college labs. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

What Is a 250 ml Round Bottom Flask Used For?

The curved wall of a round bottom flask spreads heat evenly, which is why it is the standard vessel for boiling and reflux work. At 250 ml it is the size most students handle in organic practicals such as preparing an ester under reflux, carrying out a simple distillation, or dissolving and heating reagents before crystallisation. Borosilicate glass copes with the heating involved and resists the acids, alkalis and solvents used in these experiments.

A round bottom flask cannot stand on its own, so clamp it by the neck to a retort stand or seat it in a heating mantle. Fill it no more than about half full for boiling and add anti-bumping granules for smooth boiling. Always take the polypropylene stopper out before heating — a closed flask must never be heated — and use the stopper afterwards to cover the cooled contents.

What to Specify When Ordering

• The capacity: this listing is 250 ml, and a larger flask is also available.
• The number of flasks, including spares to cover breakage over the year.
• Any support and heating accessories to quote together, such as a heating mantle, clamp or stand.

OEM Manufacturer

Jain Scientific Equipments Private Limited, trading as ScienceLab, is the OEM (original equipment manufacturer) of this Round Bottom Flask 250 ml and produces it at its own licensed factory at Saha, Ambala, Haryana, India. Laboratories, dealers and importers buy the flask factory-direct rather than from a trader, and replacement flasks for breakage can be reordered from the maker itself — just ask us. Learn more on the ScienceLab company profile.

Related Laboratory Equipment

Items that complete a heating or reflux set-up with the Round Bottom Flask 250 ml:

• Heating Mantle 250ml — a mantle in the matching size for even heating.
• Retort Clamp Three Finger — grips the neck of the flask securely.
• Retort Stand — supports the clamp and flask above the heat source.
• Liebig Condenser — for reflux and distillation; confirm the neck fit when ordering.
• Round Bottom Flask 500ml — the larger size in the same range.

See more glassware and bench apparatus in the Laboratory Equipment category.

Frequently Asked Questions

What is the Round Bottom Flask 250 ml made of?
The Round Bottom Flask 250 ml is made of borosilicate glass, which is heat resistant and chemical resistant. That makes it suitable for heating, boiling and reflux work with the acids, alkalis and solvents used in school and college chemistry.

Does the Round Bottom Flask 250 ml come with a stopper?
Yes. The Round Bottom Flask 250 ml is fitted with an interchangeable polypropylene stopper. Use it to close the flask for storage or transfer, and always remove it before heating, because a stoppered flask must never be heated.

How should the Round Bottom Flask 250 ml be heated?
Heat the Round Bottom Flask 250 ml in a heating mantle or over wire gauze while it is clamped by the neck. Fill it no more than about half full, add anti-bumping granules and raise the heat gradually for smooth boiling.

Can the Round Bottom Flask 250 ml stand on the bench by itself?
No. Like all round bottom flasks, the Round Bottom Flask 250 ml cannot stand upright on a flat surface. Clamp it to a retort stand or rest it in a heating mantle or a suitable ring support while filling and using it.

Who manufactures the Round Bottom Flask 250 ml?
The Round Bottom Flask 250 ml is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Buyers order it and any replacements directly from the manufacturer.

Can the Round Bottom Flask 250 ml be ordered in bulk?
Yes. ScienceLab supplies the Round Bottom Flask 250 ml in bulk to schools, colleges, institutions, dealers and importers in India and international markets. Send the product code SCI-1644/017, the quantity and your delivery location for a quotation.

Request a Quote

Request a quotation for the Round Bottom Flask 250 ml (SCI-1644/017) through the contact page or add it to the enquiry cart. Quotes come straight from the manufacturer.

Last updated: 24 September 2026