Flask Filter
Product Code : LSK-LF-10418
Flask Filter (SKU LSK-LF-10418), widely known as a Buchner or suction flask, is a heavy-wall flask with a glass connector for vacuum filtration. Its thick walls withstand high vacuum, and it comes in five capacities from 100 ml to 5000 ml. It is a routine item in college chemistry, pharmacy and research labs. Science Lab Supplies is the Ambala, India source for schools, colleges, training institutes, tender contractors and distributors ordering this flask.
Specifications
The filter flask is made with a heavy wall so it can stand up to high vacuum without collapsing. A glass connector near the neck takes the vacuum tubing, and the flask carries white enamel printing but no graduation marks, since it collects filtrate rather than measuring it.
| Parameter | Value |
|---|---|
| SKU | LSK-LF-10418 |
| Also known as | Buchner flask, suction flask |
| Wall | Heavy wall, withstands high vacuum |
| Vacuum connection | Glass connector |
| Marking | Printed in white enamel, without graduation |
| Capacities | 100 ml, 250 ml, 500 ml, 1000 ml, 5000 ml |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Filter Flask
Fitted with a Buchner funnel and a rubber adapter or bung, the flask is connected to a vacuum source so suction pulls liquid quickly through the filter paper and leaves a dry solid behind. It is standard chemistry lab equipment in India for collecting crystals and precipitates.
- B.Sc. organic chemistry: collecting and washing crystals after preparation and recrystallisation.
- B.Pharm. pharmaceutical chemistry practicals: isolating synthesised solids.
- Research and quality labs: rapid filtration of precipitates and suspensions.
Clamp the flask firmly, place a trap between it and the vacuum line, and release the vacuum before switching off the pump. Check for chips or scratches before each use, as damaged glass is weaker under vacuum.
Standard Scope of Supply
The Flask Filter is supplied as a single flask with its glass connector, in whichever of the five capacities you order. Buchner funnels, rubber adapters and vacuum tubing are separate items and can be listed on the quotation if you need a complete filtration set-up.
Packing, MOQ and Lead Time
You may ask for one flask, a full set of capacities, or enough for every student bench; the quotation spells out packing, delivery time and price for exactly that quantity. Matching funnels and other items from a laboratory glassware supplier in India can be priced alongside.
Science Lab Supplies holds an Importer-Exporter Code as a registered exporter and is able to ship to buyers in Zambia, Rwanda, South Africa, Qatar, Sri Lanka and Vietnam. Reach us through the contact page, collect items in the enquiry cart, or visit the lab tender page for tender supplies.
Frequently Asked Questions
Why does a filter flask need a heavy wall?
Under vacuum, air pressure pushes inward on the whole flask. A heavy wall lets it withstand high vacuum, where an ordinary thin-walled flask could implode.
Is the flask graduated?
No. It is printed in white enamel without graduation, because it collects filtrate rather than measuring volume.
What sizes can I order?
The flask is listed in 100 ml, 250 ml, 500 ml, 1000 ml and 5000 ml capacities. Smaller sizes suit student preparations; the larger ones handle bulk filtration.
Who supplies the Flask Filter?
Science Lab Supplies supplies it from Ambala, India, and can quote it on its own or with Buchner funnels and other glassware.
Related Filtration Glassware
A filter flask works with a Buchner-type funnel on top, so the funnels below complete the suction filtration set, while the two flasks cover the titration and solution work that usually shares the same bench and can go on one quotation.
- Buchner Funnel with Sintered Disc — sits on the flask for vacuum filtration.
- Buchner Funnel Fritted Disc — fritted-disc alternative.
- Conical Flask — ground-joint conical flask with glass stopper.
- Flask Erlenmeyer with Screw Cap — for storing filtrates and solutions.
Browse the full laboratory flasks range or all school lab equipment.
Last updated: 25 September 2026
