Separating Funnel with PTFE Key Stopcock
Product Code : LSK-LF-10403
Separating Funnel with PTFE Key Stopcock (SKU LSK-LF-10403) is a separatory funnel fitted with a PTFE key stopcock and a PE stopper, printed in white enamel. It serves to separate immiscible liquids and carry out solvent extractions in college chemistry, pharmacy and analytical laboratories. Colleges, schools, institutes, tender contractors and distributors can request it from Science Lab Supplies, whose Ambala, India base handles quotation and dispatch.
Specifications
The table below lists each specification of the PTFE-key separating funnel. In short, every funnel in this line has a PTFE key stopcock and a PE stopper, the printing is in white enamel, stopcock bores are 2, 4 or 6 mm, and five capacities cover 125 ml to 2000 ml, from teaching-scale separations up to batch extractions.
| Specification | Value |
|---|---|
| SKU | LSK-LF-10403 |
| Stopcock | PTFE key stopcock |
| Stopper | PE stopper |
| Stopcock bore | 2 mm, 4 mm, 6 mm |
| Printing | White colour enamel |
| Capacities | 125, 250, 500, 1000, 2000 ml |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the PTFE Key Separating Funnel
The PTFE key turns smoothly without grease, so the funnel can be shaken, vented and drained repeatedly with organic solvents that would otherwise dissolve stopcock grease. That makes it a practical choice for extraction work in university, pharmacy and quality-control laboratories where clean extracts matter.
- B.Sc. and M.Sc. organic chemistry: extraction and washing of reaction mixtures, with the organic layer run into a Conical Flask (Erlenmeyer) with Stopper.
- B.Pharm practicals: solvent extraction in pharmaceutical analysis.
- Analytical labs: liquid–liquid extraction before instrumental analysis.
- Class 12 chemistry: demonstrating separation of immiscible liquids.
Release pressure through the stopcock after every shake when using volatile solvents, and work in a well-ventilated area. A Four Prong Laboratory Clamp can steady the larger 1000 ml and 2000 ml funnels on a stand.
Standard Scope of Supply
The funnel is supplied with its PTFE key stopcock fitted and a PE stopper, in the bore and capacity you order. Stands, rings or a separatory funnel holder are separate items and can be added to the same order so the extraction bench is quoted in one go.
Packing, MOQ and Lead Time
We quote for one funnel or for several capacities to equip an extraction bench. The quotation you receive states packing, delivery time and price for that quantity, and as a laboratory equipment supplier in India we can add holders, flasks and other glassware to it.
Science Lab Supplies holds an Importer-Exporter Code and, as a registered exporter, can ship to buyers in Peru, Egypt, Iraq, Nigeria, Kenya and Ghana. Pair each capacity with a 2, 4 or 6 mm bore and send the list through the contact page, or keep a running selection in the enquiry cart; formal procurement goes via the lab tender page.
Frequently Asked Questions
What comes with the funnel?
Each funnel has a PTFE key stopcock and a PE stopper, and its printing is in white enamel. It arrives in the bore and capacity you order, ready for separation work.
Which capacities and bores are offered?
Capacities are 125, 250, 500, 1000 and 2000 ml. Stopcock bores of 2, 4 and 6 mm are available; tell us which you need for each size so the quotation matches.
Does a PTFE key need grease?
No. PTFE seals against the glass barrel without grease, so solvents are not contaminated and the key is less likely to stick after use.
Who supplies the Separating Funnel with PTFE Key Stopcock?
Colleges, pharmacy institutes, testing labs and tender contractors receive quotations for it from Science Lab Supplies in Ambala, India, for a single funnel or a mixed set of sizes.
Related PTFE-Stopcock Funnels and Holders
These items share the grease-free PTFE approach or support the same extraction work. The Gilson, dropping and pressure-equalising funnels use PTFE stopcocks, the polypropylene funnel has a PTFE plug, the pear separating funnel offers several stopcock options, and the holder keeps any funnel steady.
- Separating Funnel Gilson PTFE Stopcock — PTFE stopcock in 2.5, 4 or 6 mm bore, from 50 ml.
- Dropping Funnel Pear Shape PTFE Stopcock — PTFE stopcock and drip stem, with a stem-inside-cone option.
- Dropping Funnel Cylindrical, PTFE Stopcock — PTFE stopcock with a PE stopper option, 50 ml to 1000 ml.
- Pressure Equalising Funnels Pear shape — PTFE key stopcock with a socket and a stem with cone.
- Separatory Funnel PP — PP stopcock with a self-lubricating PTFE plug and threaded screw cap, 100 ml to 500 ml.
- Separating Funnel Pear shape — needle valve, PTFE or solid glass stopcock in 2.5 to 6 mm bore.
- Separatory Funnel Holder — non-corrosive polypropylene that leaves room to place funnels freely.
Browse the full Laboratory funnel range, the Chemistry Lab range, or all school lab equipment.
Last updated: 9 October 2026
