Separating Funnel Gilson PTFE Stopcock
Product Code : LSK-LF-10398
Separating Funnel Gilson PTFE Stopcock (SKU LSK-LF-10398) is a Gilson-pattern separating funnel fitted with a PTFE stopcock and a PE stopper, used to separate two immiscible liquids and to carry out solvent extractions. It serves senior-school chemistry, B.Sc. and M.Sc. organic practicals, pharmacy labs and industrial QC. Science Lab Supplies provides it from Ambala, India to schools, universities, institutes, tender contractors and distributors.
Specifications
This Gilson funnel pairs a grease-free PTFE stopcock with a polyethylene stopper. It is listed in three stopcock bores of 2.5, 4 and 6 mm and six capacities from 50 ml up to 2000 ml, covering small teaching extractions as well as larger preparative work.
| Parameter | Value |
|---|---|
| SKU | LSK-LF-10398 |
| Pattern | Gilson |
| Stopcock type | PTFE |
| Bore | 2.5 mm, 4 mm, 6 mm |
| Stopper | PE stopper available |
| Capacity | 50, 100, 250, 500, 1000, 2000 ml |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Gilson Separating Funnel
The funnel is shaken with two immiscible liquids, left to settle into layers, and the lower layer is run off through the stopcock. The PTFE key needs no grease, so organic solvents stay free of grease contamination, which matters for extractions that are later weighed or analysed.
- Class 12 chemistry: separating immiscible liquids such as oil and water.
- B.Sc. organic chemistry: solvent extraction and washing of an organic layer.
- Pharmacy practicals: extracting active constituents from aqueous preparations.
- Environmental and QC labs: liquid–liquid extraction of samples before analysis.
Vent the funnel through the stopcock after each shake to release solvent vapour pressure, keeping the tip pointed away from people.
Standard Scope of Supply
Each separating funnel comes with its PTFE stopcock fitted, in the capacity and bore you choose, and is available with a PE stopper. Ring stands, funnel holders and receiving flasks are not included and can be added to the order.
Packing, MOQ and Lead Time
Ask for pricing on a single funnel, a mixed set of capacities, or enough units for every student bench. The quotation covers packing, delivery time and price for exactly that quantity, and holders or other chemistry lab equipment in India from our catalogue can be included.
Registered as an exporter and holding an Importer-Exporter Code, Science Lab Supplies can ship to buyers in South Africa, Qatar, Sri Lanka, Vietnam, Malaysia and Peru. Start an enquiry on the contact page, gather items in the enquiry cart, or check the lab tender page for large institutional orders.
Frequently Asked Questions
How does this funnel differ from the solid glass stopcock version?
This model has a PTFE stopcock, which turns without grease. The Gilson solid glass version uses a glass key, which is normally lightly greased to seal.
Which bore should I pick?
The 2.5 mm bore gives fine control for small volumes, 4 mm suits general teaching, and 6 mm drains large capacities faster.
What sizes are available?
Capacities of 50, 100, 250, 500, 1000 and 2000 ml are listed, each with a PE stopper option.
Who supplies the Separating Funnel Gilson PTFE Stopcock?
Science Lab Supplies supplies it from Ambala, India, and prepares quotations for colleges, schools, labs and contractors that need separating funnels in mixed sizes.
Related Separating Funnels
These items cover the same extraction work in other shapes and stopcock types, plus the holder that supports them. Compare the Gilson glass-key model, the Squibb shape with graduation options, and the PTFE key model with enamel printing to find the right fit.
- Separating Funnel Gilson Solid Glass Stopcock — same pattern with a glass key.
- Separating Funnel Squibb Shape — with or without graduation.
- Separating Funnel with PTFE Key Stopcock — white enamel printed, 125 to 2000 ml.
- Separatory Funnel Holder — polypropylene holder for the support rod.
Browse the full Laboratory funnel range or all school lab equipment.
Last updated: 25 September 2026
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