Separating Funnel Gilson PTFE Stopcock

Product Code : EL-F-10115

Lab Glassware Manufacturer manufactures, supplies and exports the Separating Funnel Gilson PTFE Stopcock from its production facility in Ambala, Haryana, serving school and college laboratories, research institutes and industrial buyers across India and export markets that have recently included Lithuania, Latvia and Estonia — part of a wider base of enquiries from across the Baltic States.

Quick answer: This is a Gilson-pattern separating funnel fitted with a PTFE stopcock and supplied with a PE (polyethylene) stopper, used for liquid-liquid extraction and immiscible-layer separation. It is available in six capacities from 50ml to 2000ml, with bore sizes of 2.5mm, 4mm or 6mm.

PTFE Stopcock and Bore Size for Extraction Work

A PTFE stopcock resists attack from most common organic solvents used in liquid-liquid extraction and needs no grease, which keeps the lower layer free of contamination during a separation. Bore size affects flow control at the point of draining the lower layer: the 2.5mm bore gives the finest control for a slow, dropwise cut between layers, while the 6mm bore drains faster where a clean, well-separated interface is not in question. Separating and dropping funnels of this kind are covered by the specifications set out in ISO 4800 (Laboratory glassware – Separating funnels and dropping funnels). This is manufacturer-stated conformance, not a claim of third-party certification — buyers with a specific tender or accreditation requirement should confirm the exact specification at enquiry stage before quotation.

Frequently Asked Questions

What capacities are available?
50ml, 100ml, 250ml, 500ml, 1000ml and 2000ml.

What bore sizes does the PTFE stopcock come in?
2.5mm, 4mm and 6mm, letting you choose finer flow control or faster draining depending on the separation being performed.

Why choose a PTFE stopcock over a glass key stopcock?
PTFE resists most organic solvents used in extraction work and needs no stopcock grease, avoiding a possible source of contamination in the separated layer.

Do you export the Separating Funnel Gilson PTFE Stopcock outside India?
Yes, this funnel is exported to institutional and distributor buyers outside India, with recent enquiries from Lithuania, Latvia and Estonia among other Baltic markets. Share the required capacity, bore size and destination country through Contact Us for a quotation.

Related Products

Explore more from the Funnel range: Separating Funnel Gilson Solid Glass Stopcock, Dropping Funnel Pear Shape PTFE Stopcock, and the full Laboratory funnel category.

Request a Quote

Interested in the Separating Funnel Gilson PTFE Stopcock for your lab, school or export order? Contact Us for a quotation, or visit the Tenders page for bulk and institutional procurement.

Last updated: September 2026.