Product Overview
Engineered for advanced laboratory synthesis, our borosilicate glass three-neck round-bottom flasks deliver unmatched versatility in complex chemical reactions. Designed for distillation, reflux, catalytic hydrogenation, and multi-reagent synthesis, the triple-neck configuration enables simultaneous integration of condensers, addition funnels, and temperature probes—eliminating the need for repeated setup changes and minimizing contamination risks. Ideal for research labs, pharmaceutical development, and industrial QC, these flasks are built to handle demanding thermal and chemical environments with precision and reliability.
Key Features
High-Purity Borosilicate Glass 3.3: Manufactured from premium borosilicate glass (SiO₂ ≥ 80%, Coefficient of Thermal Expansion ≤ 3.3 × 10⁻⁶ K⁻¹), conforming to ISO 3583 and USP Type I standards. Resists thermal shock up to ΔT 150°C, withstands autoclaving at 121°C, and remains inert across pH 0–14, even under prolonged exposure to strong acids, halogens, and organic solvents. Precision Ground Glass Joints: Each neck features standardized taper joints compatible with international lab equipment: Center Neck: 24/40 (US standard, 40 mm length) — optimized for large-diameter condensers or distillation columns. Side Necks: 24/29 (ISO/European standard, 29 mm length) — ideal for magnetic stirrers, nitrogen inlets, or drying tubes. Alternative Configuration: 19/26 for smaller-scale reactions (50–100 mL) — ensures secure fit with standard stoppers and thermometers. Round-Bottom Design: Curved base promotes uniform heat distribution during oil bath or heating mantle use, reduces dead volume, and enhances mixing efficiency with magnetic stir bars. Reinforced Wall Construction: Thickened glass walls in 500 mL and 1000 mL models provide structural integrity under vacuum, pressure, or mechanical agitation—preventing implosion or deformation during extended reactions. Permanently Etched Volume Markings: Clear, acid-resistant graduations allow approximate volume estimation for preparation and dilution tasks—though not intended for precise volumetric measurement.
Available Capacities & Specifications
Our three-neck flasks are tailored for scalable laboratory workflows: 50 mL: Compact and lightweight, perfect for small-scale catalysis or screening reactions. Center joint: 19/26. Side joints: 19/26 (x2). Height: 135 mm. 100 mL: Balanced for routine organic synthesis. Center joint: 19/26. Side joints: 19/26 (x2). Height: 160 mm. 250 mL: Industry-standard for mid-volume reflux and titration. Center joint: 24/29. Side joints: 24/29 (x2). Height: 210 mm. 500 mL: Robust design for extended reactions and solvent recovery. Center joint: 24/29. Side joints: 24/29 (x2). Height: 280 mm. 1000 mL: High-capacity vessel for large-batch synthesis or pilot-scale processes. Center joint: 24/40. Side joints: 24/29 (x2). Height: 360 mm. All models feature a flat, reinforced base for stability on stir plates and a beaded rim for secure handling and chip resistance.
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