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. Chemistry students, college analysts and quality-control technicians use it for filtering precipitates and solutions. Science Lab Supplies, working from Ambala, India, supplies the funnel to schools, colleges, institutes, tender contractors and distributors.
Specifications
The funnel is made from chemical- and heat-resistant borosilicate glass. Its bowl is set at 60° so a folded filter paper sits snugly against the wall, and the stem, about 150 mm long with an 8 mm outside diameter, comes in three top diameters of 70, 80 and 105 mm.
| Parameter | Value |
|---|---|
| SKU | LSK-LF-10395 |
| Material | Borosilicate glass, chemical and heat resistant |
| Bowl angle | 60°, for precise fitting of filter paper |
| Stem length | Approx. 150 mm |
| Stem O.D. | 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 during salt analysis and preparations.
- B.Sc. analytical chemistry: gravimetric filtration and transfer into volumetric flasks.
- Pharmacy and food-testing labs: clarifying solutions before analysis.
- Water and soil testing: filtering extracts for titration.
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 glass unit in the top diameter you choose from 70, 80 or 105 mm. Filter paper, funnel holders and receiving flasks are not included and can be ordered alongside it.
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. Send sizes and quantities via the contact page, collect items in the enquiry cart, or use the lab tender page for tender supply.
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.
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.
Who supplies the Long stem Funnel?
Science Lab Supplies supplies it from Ambala, India. Schools, colleges, testing labs and tender contractors can order it on its own or with other funnels and glassware.
Related Filtration Funnels
These items complete a filtration bench around the long stem funnel: a standard 60° filtering funnel for everyday work, a sintered Buchner funnel 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 — filtering funnel in diameters from 25 mm to 125 mm.
- Buchner Funnel with Sintered Disc — porosity grades 0 to 5 for vacuum filtration.
- Funnel — general funnel for pouring and transfers.
- Funnel Holder — polypropylene holder for funnels of 1 to 6 inches.
Browse the full Laboratory funnel range or all school lab equipment.
Last updated: 25 September 2026
