- Physics Lab Equipment
- Chemistry Lab Equipment
- Biology Lab Equipment
- Anatomical Lab Equipment
- Learning
- Educational Lab Equipment
- Magnets
- Agriculture
- Astronomy
- Earth Science
- Geography Lab Equipment
- Safety Lab Coat
- Laboratory
- Meteorological
- Electricity & Magnetism
- Heat
- School Lab Equipment
- Lab Glassware
- Science Lab Equipment
- Tvet Lab Equipment
- Robotics Kits Supplier and Manufacturer for Schools India
- Math Lab Equipment Manufacturers and Exporters in Ambala
- STEM Kits Manufacturers and Supplier India
- Engineering Lab Equipment
- Hospital Lab Equipment
- Water, Sanitation & Hygiene Supplies
- Cold Chain, Solar & Communication Equipment
- Nutrition
Conical Flask with Side Tube (Erlenmajer Bunsen)
Conical Flask with Side Tube (Erlenmajer Bunsen) (Product Code: SCI-234/86) is a 250 ml borosilicate glass conical flask with a side tube, used as a filtering flask for suction filtration in chemistry and biology laboratories. With a funnel seated in its narrow mouth and the side tube connected to a suction source, it collects filtrate quickly when separating crystals or precipitates. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer of chemistry lab glassware, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Conical flask with side tube (Bunsen / filtering flask) |
| Capacity | 250 ml |
| Mouth | Narrow mouth |
| Material | Borosilicate glass |
| Properties | Chemical resistant; heat resistant |
| Product code | SCI-234/86 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is a Side Tube Conical Flask Used For?
In suction filtration, a Buchner funnel with filter paper sits in the flask mouth through a rubber bung, and rubber tubing links the side tube to a water or hand pump. Reduced pressure inside the flask draws liquid through the paper, leaving a drier solid on the funnel — much faster than gravity filtration when purifying crystals in organic or inorganic preparations.
The side tube also lets the flask act as a gas outlet, for example carrying carbon dioxide from a reaction through tubing into limewater, or as a trap between a pump and apparatus. Clamp the flask firmly, use thick-walled rubber tubing, and disconnect the tubing before switching off a water pump so water is not sucked back into the filtrate.
OEM Manufacturer
Jain Scientific Equipments Private Limited, trading under the ScienceLab name, manufactures this side-tube flask as an OEM at its own licensed factory at Saha, Ambala, Haryana. Buyers from schools, universities, the dealer network and overseas importers receive quotations from the factory itself, which also handles requests for matching flasks when a set needs replacing. The ScienceLab profile has more about the company.
Related Laboratory Equipment
A suction filtration set built around this flask usually includes:
- Buchner Funnel, 90 mm, Porcelain — holds the filter paper above the flask
- Filter Paper 120 mm — filter medium, cut or folded to fit the funnel
- Rubber Tube (Laboratory) — connects the side tube to the suction source
- Vacuum Pump, Hand — provides suction where no water pump is available
- Conical Filter Flask — a filter flask from the glassware flasks range
Browse the wider Laboratory Equipment range for more glassware.
Frequently Asked Questions
What is the Conical Flask with Side Tube (Erlenmajer Bunsen) used for?
The Conical Flask with Side Tube (Erlenmajer Bunsen) is used mainly for suction filtration: a funnel sits in its mouth and the side tube connects to a pump, so filtrate is drawn quickly into the flask.
What is the capacity of the Conical Flask with Side Tube (Erlenmajer Bunsen)?
The Conical Flask with Side Tube (Erlenmajer Bunsen) has a capacity of 250 ml and a narrow mouth, a convenient size for filtering the product of a typical student-scale preparation.
Can the Conical Flask with Side Tube (Erlenmajer Bunsen) be used under vacuum?
Side-tube flasks like the Conical Flask with Side Tube (Erlenmajer Bunsen) are used with gentle suction from a water or hand pump. The listing does not state a vacuum rating, so confirm your pump and set-up with us before use.
Who manufactures the Conical Flask with Side Tube (Erlenmajer Bunsen)?
The Conical Flask with Side Tube (Erlenmajer Bunsen) is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM making borosilicate glassware at its own factory in Ambala, Haryana, India.
Is the Conical Flask with Side Tube (Erlenmajer Bunsen) heat resistant?
Yes, the Conical Flask with Side Tube (Erlenmajer Bunsen) is made of borosilicate glass listed as heat resistant and chemical resistant. Do not heat it while it is connected to suction, as this adds stress to the glass.
What details should a quote request for the Conical Flask with Side Tube (Erlenmajer Bunsen) include?
Include code SCI-234/86, the number of flasks, the delivery location and any funnels, tubing or pumps you need, so the Conical Flask with Side Tube (Erlenmajer Bunsen) and accessories are quoted together.
Request a Quote
For a quotation on the Conical Flask with Side Tube (Erlenmajer Bunsen), write to us through the contact page or add it to the enquiry cart with your filtration accessories. Prices are quoted by the manufacturer directly.
Last updated: 24 September 2026
