Separating Funnel Gilson Solid Glass Stopcock
Product Code : EL-F-10116
Quick answer: This is a Gilson-pattern separating funnel fitted with a solid glass key stopcock and supplied with a PE 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.
| Specification | Detail |
|---|---|
| Product | Separating Funnel Gilson Solid Glass Stopcock |
| Body pattern | Gilson |
| Stopcock type | Solid glass |
| Stopper | PE (polyethylene) |
| Capacities | 50ml, 100ml, 250ml, 500ml, 1000ml, 2000ml |
| Bore sizes | 2.5mm, 4mm, 6mm |
Solid Glass vs. PTFE Stopcock for Extraction Work
A solid glass key stopcock is a cost-effective, chemically inert choice for routine extraction work with most common solvents, and is the traditional stopcock type still specified by many teaching labs. It does need a thin film of stopcock grease to seat and turn smoothly, and periodic re-greasing where it sees frequent use, unlike a PTFE stopcock which runs dry. For a grease-free alternative, see the Separating Funnel Gilson PTFE Stopcock in the same body pattern.
Frequently Asked Questions
What capacities are available?
50ml, 100ml, 250ml, 500ml, 1000ml and 2000ml.
What bore sizes does the stopcock come in?
2.5mm, 4mm and 6mm, letting you choose finer flow control or faster draining depending on the separation being performed.
Does the solid glass stopcock need maintenance?
Yes, a thin film of stopcock grease is normally applied so the key turns smoothly, with periodic re-greasing where the funnel sees frequent use.
Related Products
Explore more from the Funnel range: Separating Funnel Gilson PTFE Stopcock, Dropping Funnel Cylindrical, Solid Glass Stopcock, and the full Laboratory funnel category.
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Last updated: September 2026.