The Wincom Three Finger Clamp (commonly referred to as a 3-Prong Extension Clamp) is a highly versatile and secure laboratory holding tool engineered to grip a wide range of scientific glassware and apparatus. Featuring a unique three-pronged configuration—two fingers on one side and one on the opposite side—it provides an exceptionally balanced, multi-point contact matrix. Lined with protective, high-friction insulation, this clamp allows for a secure, wiggle-free hold on everything from narrow-necked flasks and condensers to wide-body beakers, completely preventing accidental slips and glass breakage.

Technical Specifications

• Equipment Type: 3-Finger / 3-Prong Extension Laboratory Clamp

• Material Composition: Heavy-duty die-cast zinc alloy chassis with a solid chrome-plated steel extension rod

• Jaw Geometry: 3-prong asymmetrical architecture for optimized structural wrapping

• Jaw Insulation Options: Premium heat-resistant vinyl/rubber sleeves or high-friction natural cork linings

• Clamping Opening Range: Ultra-wide adjustable jaw expansion accommodating object diameters from 0mm up to 85mm

• Extension Shaft Dimensions: Standard industrial mounting rod (approximately 150mm to 180mm length, 10mm diameter)

• Adjustment Mechanism: Dual-threaded precision screw assembly with an ergonomic metal wing-nut/thumbscrew

• Assembly Mode: Attaches easily to standard laboratory retort stands using a standard bosshead holder

Key Features

• Interlocking 3-Prong Contact Matrix: The three separate fingers wrap around irregular, tapered, or purely cylindrical glassware profiles with equal efficiency, creating a solid, non-slip grip that standard two-finger clamps cannot match.

• Dual-Sided Precision Adjustability: Outfitted with a premium independent threaded adjustment mechanism, allowing operators to expand or compress the jaws uniformly to match the exact millimeter dimensions of fragile glassware.

• Anti-Slip Cushioned Sleeves: The jaws are covered with durable, high-traction vinyl or cork linings that cushion mechanical tension, absorbing sudden workbench vibrations and safeguarding thin-walled glass vessels from fracturing.

• High Thermal and Solvent Resilience: Built from heavy-duty structural alloys designed to withstand intense heat from nearby Bunsen burners, as well as prolonged exposure to acidic vapors, moisture, and organic solvents.

• Heavy-Duty Sag-Free Shaft: Features a rigid, unyielding solid metal extension rod that remains perfectly horizontal, ensuring heavy, liquid-filled reaction flasks do not tilt or sag during experiments.

Primary Applications

• Complex Distillation Assemblies: Holding large fractionating columns, condensation tubes, and extraction arms perfectly aligned within a glassware network.

• Volumetric Titration & Burette Setups: Securing large-capacity burettes, regular test tubes, or delicate separation funnels at specific vertical heights above receiving vessels.

• Chemical Synthesis and Reaction Setups: Gripping hot round-bottom flasks or Erlenmeyer flasks steady inside oil baths, water baths, or above heating mantles.

• Sensor and Probe Interfacing: Holding heavy digital pH meters, analytical temperature probes, and gas delivery manifolds securely inside chemical solutions.