Description

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The MEDILAB Conical/Squibb Shape Separating Funnel with Rotaflow stopcock is a precision extraction instrument designed for clean, efficient separation of immiscible liquid phases. Its conical geometry provides sharper layer division, making it ideal for solvent extraction, purification, and analytical workflows. Engineered for reliability and heavy routine use, it is essential equipment in chemical, pharmaceutical, academic, and industrial laboratories worldwide.

 Key Features

• Conical/Squibb shape ensures rapid and accurate phase separation.
• The Rotaflow PTFE stopcock provides smooth, leak-free, and chemically resistant operation.
• Manufactured from premium Borosilicate Glass 3.3, offering excellent thermal and chemical durability.
• Complies with ISO 4800 standards for international laboratory compatibility.
• Supplied with a PE or hollow-glass stopper for secure closure and safe reagent handling.
• High transparency for clear visibility of phase boundaries.
• Uniform wall thickness enhances strength and longevity in demanding lab environments.
• Optional graduations are available for users requiring calibrated volume markings.

Material Specifications

• Material: Borosilicate Glass 3.3
• Thermal Performance: Low coefficient of thermal expansion (~3.3 × 10⁻⁶ /°C) High resistance to thermal shock
• Chemical Resistance: Inert to most acids, alkalis, and organic solvents. The PTFE stopcock provides additional resistance to aggressive reagents
• Mechanical Properties: Strong, rigid construction suitable for repeated laboratory use

 Technical Specifications

• Available Capacities: As per the standard size table
• Design: Conical/Squibb shape with a long stem for controlled drainage.
• Stopcock: Screw-type Rotaflow stopcock with PTFE key.
• Tolerance: Volumetric tolerances aligned with international glassware standards.
• Graduation (Optional): Permanent enamel graduations on request.
• Included Accessories: Rotaflow PTFE stopcock assembly, Polyethylene or hollow-glass stopper

 Handling & Precautions

• Safe Use: Ensure the stopcock is fully closed before filling. Secure the funnel during shaking to prevent slippage.
• Cleaning: Clean with mild laboratory detergents or compatible solvents. Avoid abrasive brushes that can scratch the surface.
• Autoclaving & Temperature Limits: The Funnel and PTFE stopcock are autoclavable. Remove the PE stopper before autoclaving. Avoid direct flame or sudden temperature changes.
• Do’s & Don’ts: Do: Check stopcock movement before use. Do: Rinse immediately after handling corrosive substances. Don’t: Apply excessive force to the screw stopcock. Don’t: Use with hydrofluoric acid.
• Best Practices: Store in a vertical position to protect the stem. Keep stopcock components clean and lubricated (PTFE-safe lubricant if needed).

Applications

• Chemical Laboratories: Solvent extraction, purification, liquid-liquid separations.
• Pharmaceutical & Biotech: Sample preparation, QA/QC workflows, separation of organic/aqueous phases.
• Academic & Research Institutions: Core equipment for organic chemistry, analytical chemistry, and teaching labs.
• Environmental & Analytical Testing: Extraction of pollutants, residue analysis, and chromatography sample prep.
• Essential for routine separation tasks, preparative chemistry, and analytical workflows requiring high accuracy and repeatability.