Separatory Funnels: Essential Tools for Liquid–Liquid Extraction

Available in pear-shaped and cylindrical designs
PTFE stopcocks provide smooth, leak-free operation
BORO 3.3 glass ensures chemical and thermal durability
Graduated markings for accurate volume control
Ideal for organic chemistry, solvent extraction, and pharmaceuticals
Supplied by LabChoice Australia – Reliable and precise

Introduction: The Role of Separatory Funnels in the Laboratory

Separatory funnels are indispensable in organic and analytical chemistry, where liquid–liquid extractions are needed to separate immiscible solutions. With their narrow outlet stem and stopcock mechanism, they enable precise draining of layers, making separation of solvents efficient and safe.

LabChoice separatory funnels are manufactured from BORO 3.3 glass to ISO and ASTM standards, ensuring excellent chemical resistance and long-term performance in demanding laboratory environments.

Types of Separatory Funnels

Pear-Shaped Funnels

The classic design for routine extractions. The tapered body allows clearer separation of layers, reducing risk of cross-contamination.

Cylindrical Funnels

Offer more uniform graduations and are often used in analytical and industrial applications where precise volume control is required.

Both types are supplied with PTFE stopcocks for durability and ground glass stoppers for airtight sealing.

Applications of Separatory Funnels

• Organic Chemistry: Separation of reaction products and solvents.
• Pharmaceuticals: Purifying active ingredients during synthesis.
• Environmental Testing: Isolating contaminants in water or soil extracts.
• Industrial QC: Extracting solvents or oils for purity testing.
• Education: Teaching practical solvent extraction techniques.

These funnels ensure accuracy and reproducibility in experiments where solvent purity is critical.

LabChoice Separatory Funnels: Built for Accuracy and Safety

LabChoice Australia supplies separatory funnels in capacities from 50 mL to 2000 mL, with interchangeable joints to integrate into distillation and extraction setups. Every funnel undergoes strict quality checks, ensuring compliance with international standards.

By choosing LabChoice, you gain:

• ISO- and ASTM-compliant BORO 3.3 glass construction
• Options in pear-shaped and cylindrical forms
• PTFE stopcocks and ground glass stoppers for leak-free operation
• Trusted Australian supply and support

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References:

• ISO 4800 – Laboratory Glassware – Separatory Funnels. International Organization for Standardization.
• ASTM E1095 – Standard Specification for Laboratory Glass Funnels. ASTM International.
• University of Adelaide, School of Chemistry. Practical Organic Chemistry – Extraction Techniques.
• ACS Green Chemistry Institute. Liquid–Liquid Extraction in Sustainable Chemistry.