Round Bottom Flask Manufacturer,Supplier and Exporter in India

Round Bottom Flask (Product Code: SLE/GFL/13) is a graduated borosilicate glass flask with a spherical body and a narrow neck, the standard boiling vessel for heating, refluxing and distilling liquids. The curved base spreads heat evenly with no corners to stress the glass, and the narrow neck limits splashing and evaporation. School, college and university chemistry labs looking for a dependable round bottom flask in India and abroad order it from Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, which manufactures it in five capacities.

Specifications

Typical Use

Round bottom flasks are the boiling vessel in most distillation apparatus and reflux set-ups: the flask sits in a heating mantle or is clamped over a burner and gauze, a condenser is fitted above or to the side, and the liquid is boiled with anti-bumping granules. Students also use them for preparing esters, heating mixtures under reflux and demonstrating fractional distillation. The narrow neck accepts a single- or two-hole stopper for a thermometer or delivery tube.

Because the base is curved, the flask will not stand by itself — always support it in a clamp, a mantle or a cork ring. Fill it to no more than about half for boiling, heat gradually, and read the graduations only as an approximate guide to volume. The 50 ml and 100 ml sizes suit individual student work; the 500 ml and 1000 ml flasks are useful for demonstrations and preparing larger quantities.

Manufacturer

This flask comes from Jain Scientific Equipments Private Limited, whose products carry the ScienceLab name. The firm is headquartered in Ambala, Haryana, a long-standing centre of scientific instrument making in India. Learn more on our company profile.

Related Laboratory Equipment

Heating and support equipment chosen with round bottom flasks:

• Heating Mantle 1000ml — cradles and heats the round base evenly
• Block Heater, Round Bottom Flasks — dry block heating for round-bottomed vessels
• Retort Clamp Four Finger — grips the neck firmly on a retort stand
• Rubber stoppers with holes of different diameters — to carry a thermometer or delivery tube in the neck
• Round Bottom Flask With Two Neck — when a second opening is needed for additions

Explore more options in our Glassware Flasks category.

Frequently Asked Questions

Why use a round bottom rather than a flat bottom flask for boiling?
The even curvature heats uniformly and has no corners where stress can build up, so it is the usual choice for prolonged boiling, reflux and distillation.

How does this narrow-neck version differ from the wide-neck one?
The narrow neck takes a smaller stopper and reduces loss by splashing or evaporation. The wide-neck version is easier to fill with solids and to clean.

What capacities are listed?
50 ml, 100 ml, 250 ml, 500 ml and 1000 ml.

Does the neck have a standard ground joint?
This listing describes a plain narrow neck. If you need a jointed flask for interchangeable apparatus, contact us with the joint size and we will advise.

How should the flask be stored?
Store it upright in a cork ring or flask rack so the round base cannot roll, and keep it away from bench edges.

Do you accept bulk and export orders?
Yes. Share the sizes, quantities and delivery destination, and we will quote for supply within India or to international markets.

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Last updated: 24 September 2026