The Separating Funnel PEAR SHAPE with Solid Glass Stopcock engineered by Edulabs is an indispensable piece of laboratory glassware designed specifically for liquid-liquid extraction processes. Liquid-liquid extraction is a core analytical methodology used to isolate specific solutes from a liquid mixture based on their relative solubilities in two immiscible solvent phases, typically an aqueous phase and an organic solvent phase.

The characteristic pear shape (piriform) of this separating funnel is specifically designed to enhance phase separation efficiency. The wide upper body provides ample contact area during vigorous mixing, while the steeply tapered conical lower section narrows down sharply to the stopcock assembly. This geometric transition allows clear, precise visual identification of the interface boundary between two distinct liquid layers, enabling technical operators to isolate and drain the denser bottom layer through the solid glass stopcock with minimal inter-phase contamination.

Constructed entirely from premium-grade BORO 3.3 Borosilicate Glass, the funnel body exhibits excellent resistance to thermal shock and chemical degradation. It safely withstands exposure to concentrated acids, bases, halogenated hydrocarbons, and organic solvents. The neck features a standardized ground glass socket fitted with an ergonomic Polyethylene (PE) stopper that maintains a liquid-tight seal during shaking. The lower outlet is controlled via a precision-ground solid glass stopcock, offering fine flow rate adjustability and complete shutoff capability.

Manufactured in alignment with international laboratory standards, the Edulabs Pear-Shaped Separating Funnel delivers superior repeatability and structural longevity across demanding applications. Whether deployed in academic research, industrial quality assurance, or environmental pollution monitoring, this funnel provides the accuracy, chemical safety, and ergonomic control required by modern scientific disciplines.

Key Features

• Crafted from high-purity BORO 3.3 Borosilicate Glass for maximum chemical inertness.

• Pear-shaped design accelerates sharp phase separation and clear boundary visualization.

• Equipped with a precision-ground solid glass stopcock for precise flow control.

• Standardized socket fitted with a durable Polyethylene (PE) stopper to prevent leaks.

• Excellent thermal shock resistance suitable for varied temperature extractions.

• High chemical durability against organic solvents, acids, and aggressive reagents.

• Smooth interior glass surfaces minimize sample retention and cross-contamination.

• Manufactured in accordance with international DIN/ISO quality standards.

• Available in multiple standardized volume capacities from 125 ml to 2000 ml.

• Ergonomically shaped body allows comfortable hand clamping and venting during mixing.

Technical Specifications

Available Models

Applications

• Partitioning and isolation of organic solutes during chemical synthesis routines.

• Washing organic reaction mixtures with aqueous saline or bicarbonate solutions.

• Extraction of active compounds and active pharmaceutical ingredients (APIs) in drug discovery.

• Determination of oil, grease, and hydrocarbon concentrations in water and wastewater samples.

• Extraction of pesticide residues and environmental contaminants from agricultural samples.

• Essential oil and fragrance compound isolation from botanical steam distillates.

• Lipid and fatty acid purification in food and beverage quality control testing.

• Analytical sample preparation for GC-MS and HPLC spectroscopic analysis.

• Education laboratory experiments covering liquid separation principles.

• Petrochemical extraction and solvent phase purification protocols.

Note

Edulabs also offers a comprehensive range of laboratory glassware, laboratory plasticware, laboratory chemicals, laboratory instruments, laboratory equipment, scientific apparatus, educational laboratory equipment, and customized laboratory solutions for educational institutions, research laboratories, pharmaceutical industries, healthcare facilities, biotechnology laboratories, environmental testing laboratories, food and beverage laboratories, and industrial quality control laboratories. Contact Edulabs for bulk orders and OEM requirements.