Flask Flat Bottom Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-5711
Jlab Export is a leading Flask Flat Bottom Manufacturer,and suppliers in India
Flask Flat Bottom (code EL-SLE-5711) is a narrow-neck borosilicate glass flask with a flat base, so it stands on the bench without a support ring. It is used for warming, mixing and holding liquids and for simple gas-preparation set-ups in school and college chemistry labs, and is listed in five sizes from 50 to 1000 ml. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Material | Borosilicate glass |
| Neck | Narrow neck |
| Bottom | Flat bottom |
| Capacities listed | 50 ml, 100 ml, 250 ml, 500 ml and 1000 ml |
| Second figure in the size list | 22 for 50 ml; 35 for 100, 250 and 500 ml; 42 for 1000 ml — given without a heading or unit, so ask JLab what it measures before ordering |
| Quality check | Each flask is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| This listing covers | The flask in the size you order; rubber bungs, tripod stand and wire gauze are separate catalogue items |
| Product code | EL-SLE-5711 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Flasks?
| Model | Bottom and neck | Capacities listed | Other listed details |
|---|---|---|---|
| This flask (EL-SLE-5711) | Flat bottom, narrow neck | 50, 100, 250, 500 and 1000 ml | Borosilicate glass |
| Glass Flask Boiling Flat Bottom | Flat bottom | 50, 100, 250 and 500 ml (assorted) | Borosilicate glass; chemical and heat resistant; transparent |
| Flask, Flat Bottom (500 ml) | Flat bottom | 500 ml | Borosilicate glass; height 160 mm; base diameter 105 mm; autoclavable |
| Flask Round Bottom | Round bottom, narrow neck | 50, 100, 500 and 1000 ml | Borosilicate glass; neck O.D. given for each size |
Choose this flask when you want a full run of sizes, from 50 ml for student benches to 1000 ml for demonstrations, in one listing with a narrow neck for a bung. The boiling flat-bottom flask is an assorted set up to 500 ml, the 500 ml flat-bottom flask lists its height and base diameter and is autoclavable, and the round bottom flask is the one to pick for distillation, reflux and vigorous boiling.
What Is the Flat Bottom Flask Used For?
A flat bottom flask is a general-purpose vessel for heating, mixing and holding liquids. Because it stands by itself, students can fill it on the bench, warm it on a tripod and wire gauze over a Bunsen burner or spirit lamp, and set it down again without a clamp. In school chemistry it is used to make up and hold solutions and in gas-preparation set-ups where a two-hole rubber bung carries a thistle funnel and a delivery tube; in college labs it serves as a simple reaction vessel. The narrow neck takes a bung and cuts splashing and evaporation compared with a beaker, which is why it is a staple of chemistry lab glassware in India.
Heat it gently and evenly over a wire gauze rather than in a bare flame, and never heat it with the bung pushed in. A flat base is less suited to strong heating and to vacuum than a round one, so use a round bottom flask for distillation and reduced-pressure work. Borosilicate glass handles temperature changes far better than soda-lime glass, but still let a hot flask cool before washing it, do not stand it hot on a cold wet surface, and set aside any flask with chips or cracks.
What to Specify When Ordering
- Size — 50, 100, 250, 500 or 1000 ml; list each size with its quantity.
- Neck and bungs — if the flask must take a particular one-hole, two-hole or solid rubber bung, ask JLab to confirm the neck size of the flask you choose.
- Quantity — the minimum order is 10 units; schools usually add spares to cover breakage during the year.
- Heating set-up — add tripod stands and wire gauzes to the same enquiry if the benches need them.
Frequently Asked Questions
What is a flat bottom flask used for?
Warming, mixing and holding liquids, making up solutions and simple gas-preparation set-ups. It stands on its own, so it suits student benches where a clamp is not always available.
Which sizes can I order?
Five: 50, 100, 250, 500 and 1000 ml, all in borosilicate glass with a narrow neck. Mixed sizes can be listed in one enquiry.
What is the neck size of each flask?
The listing shows a second figure against each size — 22 for 50 ml, 35 for 100 to 500 ml and 42 for 1000 ml — but gives no heading or unit for it. Ask JLab to confirm the neck dimension of your size, especially if a bung or adapter has to fit.
Can it be heated over a Bunsen burner?
Yes, gently, on a tripod stand with a wire gauze under the flask. Borosilicate glass copes with heating well, but for distillation, reflux or vacuum a round bottom flask is the safer shape.
How does it differ from the round bottom flask?
Both are narrow-neck borosilicate flasks. The flat-bottom version stands by itself and adds a 250 ml size, while the round bottom flask needs a stand or clamp but spreads heat more evenly for boiling and distillation.
Are bungs, a tripod or a wire gauze included?
No. This listing covers the flask only; rubber bungs, the tripod stand and the wire gauze are separate items, linked below, and can be quoted together.
What details does an export quotation need?
The sizes and quantities, the destination country and port or city, the delivery terms you want (for example FOB or CIF), packing or labelling requirements, and any tender reference.
Who manufactures this flask?
JLab — Jain Laboratory Instruments Pvt Ltd — makes it at its own works in Ambala, Haryana, India, and supplies it direct as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian manufacturer of school lab equipment and laboratory glassware, incorporated in 2017 and located on Hargolal Road, Ambala, Haryana. The flat bottom flask comes from JLab’s own works and is not bought in from a trader, so schools, colleges, dealers and importers deal with the maker directly; each flask is checked by eye before it is packed, and repeat orders go back to the same works. JLab exports worldwide and ships to buyers in every region, for example Switzerland in Western Europe, Hong Kong in East Asia, Fiji in Oceania, Oman in the Middle East and Madagascar in East Africa. Institutions buying through tenders can see the JLab lab tenders page.
Bungs, Stands and Other Flasks
- Flask Round Bottom — the round-bottom version in 50, 100, 500 and 1000 ml, for boiling and distillation.
- Glass Flask Boiling Flat Bottom — assorted borosilicate flat-bottom flasks from 50 to 500 ml.
- Narrow Neck Conical Flasks, Erlenmeyer, Borosilicate Glass — conical flasks listed from 25 ml to 5000 ml, for titration and swirling.
- Bungs Rubber — one-hole, two-hole and solid bungs that seal flasks and carry thermometers, delivery tubes and thistle funnels.
- Tripod Stand — a three-legged stand that holds a wire gauze and flask above a Bunsen burner or spirit lamp.
- Wire Gauze, Metallic — a square iron gauze with a ceramic circle in the centre.
Browse the full School Lab Equipment range or the Beakers and Flasks range.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the sizes and quantity you need (minimum 10 units), any bungs, tripods or gauzes to include, and your delivery location through the contact page.
Last updated: 4 October 2026
