Description

Catalogue No.	Capacity ml
11303/01	50
11303/02	100
11303/03	250
11303/04	500
11303/05	1000
11303/06	2000

The MEDILAB Separating Funnel, Pear Shape, with Glass Stopcock is a precision-engineered laboratory vessel used for liquid–liquid extractions, phase separation, and purification of immiscible solutions. Its rounded pear-shaped geometry promotes efficient settling and clean partitioning between organic and aqueous layers. Designed for reliability, safety, and high chemical resistance, this funnel is indispensable across research laboratories, pharmaceutical development, analytical chemistry, QC/QA testing, and academic institutions. Its durable construction and smooth stopcock operation ensure consistent performance in daily laboratory workflows.

Key Features

• Premium Borosilicate Glass 3.3: Excellent thermal and chemical resistance for routine and demanding applications.
• Pear/Globe-Shaped Design: Enhances phase separation efficiency by minimising turbulence and improving liquid interface clarity.
• High-Precision Glass Stopcock: Ensures smooth drainage control, superior sealing, and long-term corrosion resistance.
• PE Stopper Included: The Lightweight, chemically inert stopper ensures secure closure during mixing and shaking.
• ISO 4800 Compliant: Manufactured according to international laboratory glassware standards.
• Clear Graduations: Durable, easy-to-read markings for accurate volume measurement.
• Leak-Proof Assembly: Precision-ground joints ensure tight, reliable sealing during extractions.
• Long Operational Life: Resistant to scratches, staining, and chemical degradation.

Material Specifications

• Material: Borosilicate Glass 3.3 (ISO 3585 compliant)

Thermal Properties:

• Low thermal expansion coefficient
• Excellent resistance to thermal shock
• Suitable for heating, cooling, and autoclaving

Chemical Resistance:

• Highly resistant to acids, alkalis, solvents, and laboratory reagents
• Non-porous surface prevents contamination and ensures high sample purity

Mechanical Strength: High hardness and durability for routine laboratory handling

Standards:

• ISO 4800, ISO 3585
• Equivalent DIN/ASTM glassware performance standards

 Technical Specifications

Available Capacities: 50 mL to 2000 mL (as per the standard size table)

• Design: Pear/Globe shape promoting optimised phase separation

Stopcock Type:

• Precision glass key stopcock
• Grease-compatible for smooth rotation

Stoppers: Polyethene (PE) stopper included (glass stopper optional)

Tolerance & Accuracy: High-accuracy graduation marks produced with controlled calibration tolerances

Packaging:

• Individually packed in shock-resistant protective sleeves
• Export-grade corrugated carton packaging
• OEM/white-label packaging optional

Accessories Included:

• Glass stopcock (pre-installed)
• PE stopper

Handling & Precautions

Safe Use:

• Ensure the stopper and stopcock are securely fitted before shaking
• Hold the stopper firmly during mixing to prevent spills

Cleaning Instructions:

• Rinse immediately after use
• Use mild laboratory detergents; avoid abrasive tools
• Compatible with most glassware washing systems

Autoclaving & Heating:

• Autoclavable at standard sterilisation temperatures
• Remove the PE stopper before autoclaving
• Avoid sudden temperature changes to prevent thermal stress

Do’s:

• Lubricate the glass stopcock periodically
• Handle with both hands, especially in larger sizes

Don’ts:

• Do not use the funnel if cracks, chips, or stopcock stiffness are observed
• Do not expose to open flame or direct extreme heat

Best Practices:

• Store vertically to protect the stem
• Air-dry thoroughly before storing to prevent microbial growth

Applications

• Chemical & Pharmaceutical Research: Solvent extractions, washing steps, compound purification.
• Biotechnology & Life Sciences: Isolation of biomolecules and organic extracts.
• Environmental Testing Laboratories: Extraction of pollutants from water, soil, and effluent samples.
• Quality Control / Quality Assurance: Phase separation is required for various analytical protocols.
• Academic & Teaching Laboratories: Ideal for organic chemistry practicals and demonstration experiments.
• Food & Beverage Testing: Extraction of analytes for safety and regulatory compliance.

The funnel serves as a core laboratory component wherever immiscible phase separation is required.

Why Choose MEDILAB

• 35+ Years of Laboratory Expertise delivering world-class scientific glassware.
• Global Presence in 40+ Countries with a strong export and distribution network.
• Export-Quality Manufacturing follows rigorous quality standards and inspection protocols.
• OEM & Private Label Programs available for distributors and large-volume buyers.
• Reliability & Consistency across every batch, ensuring precise and reproducible results.
• Strong, Secure Packaging engineered for safe international transit.