Quick Answer: The Retort Clamp, Four Finger, Brass with Dip Coating is a solid brass clamp with four dip-coated prongs for holding condensers and round-bottom flasks on a retort stand. It adjusts to diameters up to 100 mm and fits bossheads up to 16 mm.
Last updated: October 2026
Key Features
Four-prong grip spreading pressure over large-necked glassware
Solid brass alloy body
Synthetic dip coating on the gripping faces
Dual-screw (double key) independent control of the jaws
Threaded steel screws for fine tension adjustment
Technical Specifications
Specification
Value
Material
Solid brass alloy
Fingers
Four-prong universal design
Grip
Synthetic dip coating
Adjustment
Dual-screw (double key) independent control
Clamping capacity
Diameters up to 100 mm
Bosshead compatibility
Up to 16 mm
About This Product
The fourth finger gives a steadier hold on large or awkwardly shaped glassware than a three-prong clamp. It is used in university chemistry and technical courses for distillation and reflux set-ups, where a heavy condenser has to stay centred over a heat source or stirrer.
Frequently Asked Questions
How large a vessel can the four finger clamp hold?
It adjusts for diameters up to 100 mm and fits standard laboratory bossheads up to 16 mm.
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