Long stem Funnel
Product Code : LSK-LF-10395
Long stem Funnel (SKU LSK-LF-10395) is a borosilicate glass filter funnel with a 60° bowl and a stem of about 150 mm, made for gravity filtration where the stem must reach well down into a flask or cylinder. It suits filtering precipitates and solutions in school chemistry, college analysis and quality-control work. Ordered singly or in mixed sizes, it is dispatched by Science Lab Supplies from Ambala, India to colleges, schools, institutes and tender buyers.
Specifications
The table lists every specification of the long-stem borosilicate funnel. In short, its bowl is set at 60° so a folded filter paper sits snugly against the wall, the stem is about 150 mm long with an 8 mm outside diameter, and three top diameters of 70, 80 and 105 mm are offered.
| Specification | Value |
|---|---|
| SKU | LSK-LF-10395 |
| Material | Borosilicate glass |
| Resistance | Chemical and heat resistant |
| Bowl angle | 60°, for precise fitting of filter paper |
| Stem length | Approx. 150 mm |
| Stem outside diameter | 8 mm |
| Top external diameter | 70 mm, 80 mm, 105 mm |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Long Stem Funnel
In a long-stem funnel the column of liquid in the stem pulls the filtrate through the paper, so gravity filtration runs faster than with a short stem. The long stem also delivers the filtrate below the neck of a volumetric flask, which suits quantitative work in school, college and industrial labs.
- Class 11–12 chemistry: filtering precipitates through Filter Paper during salt analysis and preparations.
- B.Sc. analytical chemistry: gravimetric filtration and transfer into a Volumetric Flask.
- Pharmacy and food-testing labs: clarifying solutions before analysis.
- Water and soil testing: filtering extracts for titration into Beakers, Tall form, Without Spout.
Wet the fitted filter paper so it seals against the 60° wall; an unbroken liquid column in the stem gives the fastest flow.
Standard Scope of Supply
The long stem funnel is supplied as a single borosilicate glass unit in the top diameter you choose from 70, 80 or 105 mm, each with the 60° bowl and 8 mm stem. Filter paper, funnel holders and receiving flasks can be added to the same quotation if required.
Packing, MOQ and Lead Time
Request a quotation for a single funnel or a batch in mixed diameters for a teaching laboratory. Every quotation gives packing, delivery time and price for the quantity requested, and other borosilicate laboratory glassware in India from our range can be listed on the same document.
Because it holds an Importer-Exporter Code as a registered exporter, Science Lab Supplies can ship to buyers in Bangladesh, Zambia, Rwanda, South Africa, Qatar and Sri Lanka. Mention whether you need the 70, 80 or 105 mm size when you write through the contact page; the enquiry cart gathers several items at once, and the lab tender page covers institutional procurement.
Frequently Asked Questions
Why is the stem so long?
The stem of about 150 mm holds a column of liquid that speeds up gravity filtration and lets the tip reach below the neck of a flask, reducing splashing and loss.
What glass is the funnel made of?
It is made from borosilicate glass that resists chemicals and heat, so it can take hot filtrates and common laboratory reagents. Inspect it for chips or cracks before each use, as with any glassware.
Which sizes can I order?
The top external diameter is 70 mm, 80 mm or 105 mm. All three have a 60° bowl and an 8 mm stem about 150 mm long, so pick the size to suit your filter paper and receiver.
Who supplies the Long stem Funnel?
The funnel is quoted and dispatched by Science Lab Supplies of Ambala, India, which can price it alone or alongside other funnels and borosilicate glassware for schools, colleges, testing labs and tender contractors.
Related Filtration Funnels and Glassware
These items complete a filtration bench around the long stem funnel: standard and borosilicate filtering funnels for everyday work, two Buchner funnels and a filter flask for suction filtration, a general funnel for transfers, and a holder that keeps the funnel upright on a support rod.
- Funnel Filtering, 60° angle with stem — 60° funnel made in 25 mm through to 125 mm diameters.
- Borosilicate Filter Funnel — heavy-walled conical funnel of Borosilicate 3.3 glass.
- Buchner Funnel with Sintered Disc — fire-polished rim and stem, porosity 0 to 5.
- Buchner Funnel Fritted Disc — coarse, medium or fine porosity, from 2 ml to 3000 ml.
- Flask Filter — heavy-wall flask with glass connector that withstands high vacuum.
- Funnel — cone for guiding liquid or powder, 25 mm to 100 mm.
- Funnel Holder — corrosion-free polypropylene; takes 3 to 6 inch funnels in the main opening.
Browse the full Laboratory funnel range, the Lab Glassware range, or all school lab equipment.
Last updated: 9 October 2026
