EBT2 1000ml Glass Separatory Funnel Set DONLAB with PTFE Stopcock

Description

Product Overview

The EBT2 1000ml glass separatory funnel from DONLAB is engineered for reliable liquid‑liquid extraction in chemistry, biochemistry, and environmental testing laboratories. Constructed from high‑quality borosilicate glass, the funnel offers excellent chemical resistance, thermal stability, and optical clarity, allowing users to monitor phase boundaries with precision. The integrated PTFE (polytetrafluoroethylene) stopcock provides a smooth, leak‑free operation that tolerates a wide range of solvents, acids, and bases without degradation. A robust steel support stand, stamped to dimensions of 8 × 5 inches (21 cm × 12 cm), anchors the funnel securely on any bench, while the adjustable clamp accommodates varying heights up to 20 inches (50 cm) and a rod diameter of 3/8 inches (10 mm). Complementing the stand, a polypropylene (PP) holder protects the funnel’s neck and offers a convenient grip for easy handling during setup and cleaning. The complete set includes a stainless‑steel support stand, a clamp, a PP holder, and the PTFE stopcock, delivering a turnkey solution that eliminates the need for additional accessories. Dimensions of the funnel itself measure 5 × 0.01 × 8 inches, providing a 1000 ml capacity that balances volume with manageable size for standard laboratory glassware racks. With a best‑seller rank of #74 in Lab Separatory Funnels and a 4.8‑star rating from 18 verified customers, the EBT2 set has proven its performance and durability in demanding research environments.

The borosilicate composition resists corrosion from strong acids, bases, and organic solvents, while withstanding temperature extremes from –20 °C to 250 °C, making it suitable for both cryogenic and high‑heat applications. The clear glass body enables visual monitoring of phase separation, reducing the need for auxiliary equipment. The funnel’s graduated markings are etched with high precision, offering accurate volume readings to within ±1 ml, which is essential for quantitative analytical work. The PTFE stopcock features a double‑seal design that prevents leakage even under slight vacuum, and its low‑friction stem ensures smooth operation without excessive torque. The steel support stand is coated with a corrosion‑resistant finish, extending its service life in humid laboratory environments. The polypropylene holder is chemically inert, providing a non‑reactive surface that safeguards the glass neck from scratches during transport or storage.

All components are engineered for modular compatibility. The stopcock threads match standard 24‑mm glassware, allowing interchangeability with other laboratory apparatus. The clamp’s quick‑release mechanism enables fast adjustment of the funnel height, facilitating ergonomic positioning for users of varying stature. The stand’s base includes rubber feet that dampen vibrations and prevent slipping on smooth countertops. Together, these features create a cohesive system that streamlines workflow, minimizes setup time, and enhances safety during liquid handling operations.

In addition to the core components, the package includes a set of replacement O‑rings for the stopcock, ensuring long‑term reliability. The funnel’s design complies with ASTM E415 standards for laboratory glassware, guaranteeing dimensional accuracy and impact resistance. Packaging is optimized for protection during shipping, with molded foam inserts that secure each part and prevent breakage. The product’s durability is reflected in its long service life, often exceeding five years of regular laboratory use when maintained according to the manufacturer’s guidelines.

Usage

This separatory funnel is ideal for routine extraction procedures such as liquid‑liquid partitioning, solvent washing, acid‑base extractions, and sample preparation for chromatography. The 1000 ml volume accommodates both small‑scale analytical samples and larger preparative batches, making it versatile for academic, industrial, and quality‑control laboratories. The PTFE stopcock’s low‑friction seal enables precise control of flow rates, allowing users to separate immiscible phases without cross‑contamination. The steel support stand and clamp provide stability on cluttered benches, reducing the risk of accidental tipping during vigorous mixing or when applying vacuum. The polypropylene holder protects the glass neck from mechanical impact and offers a non‑slip surface for safe handling, especially when the funnel is hot after distillation or cooling cycles. Because the glass is borosilicate, the funnel can withstand temperature swings from –20 °C to 250 °C, supporting applications that involve heating, cooling, or reflux. Whether used in organic synthesis labs, environmental monitoring stations, or pharmaceutical formulation facilities, the EBT2 funnel delivers consistent performance and easy cleaning – simply rinse with appropriate solvents and store the components in the provided holder to prevent dust accumulation.

Typical applications include the extraction of organic compounds from aqueous matrices, purification of reaction mixtures prior to crystallization, and phase separation in sample preparation for gas chromatography‑mass spectrometry (GC‑MS). The funnel’s clear body allows operators to observe the interface between aqueous and organic layers, facilitating accurate collection of the desired phase. In environmental analysis, the device is employed to isolate contaminants from water samples, enabling downstream quantification by high‑performance liquid chromatography (HPLC). The robust construction also makes it suitable for teaching laboratories, where repeated use by students demands durability and safety.

For safety, users should wear appropriate personal protective equipment (PPE) such as gloves and goggles when handling hazardous chemicals. The stopcock should be operated slowly to avoid pressure spikes, and the funnel should never be overfilled beyond the 1000 ml mark. After each use, the funnel should be rinsed with a compatible solvent, the stopcock threads cleaned of residue, and the O‑rings inspected for wear. The polypropylene holder should be stored in a clean, dry area to prevent moisture buildup that could affect the glass neck.

Why Choose Us

DONLAB has a reputation for manufacturing laboratory glassware that meets stringent international standards, and the EBT2 separatory funnel set exemplifies that commitment. Each component undergoes rigorous quality inspections, including dimensional verification, leak testing of the PTFE stopcock, and corrosion resistance assessment of the steel stand. The integrated design reduces the need for third‑party accessories, saving time and procurement costs. Our after‑sales support includes a one‑year warranty covering manufacturing defects, and a dedicated technical team is available to assist with installation, troubleshooting, and best‑practice guidance. By choosing this complete set, laboratories benefit from a single source of truth for compatibility, ensuring that the stopcock, stand, clamp, and holder all fit together seamlessly. Additionally, the product’s high customer rating reflects real‑world reliability, with users praising its smooth operation, sturdy construction, and ease of cleaning. Investing in the EBT2 set means investing in durability, accuracy, and peace of mind for every extraction task.

DONLAB’s manufacturing facilities are ISO 9001 certified, ensuring that every batch adheres to a documented quality management system. Production processes include automated glass blowing, precision machining of metal components, and controlled PTFE extrusion, all monitored by calibrated instrumentation. Statistical process control (SPC) is applied to maintain tight tolerances on dimensions and material properties, reducing variability and guaranteeing consistent performance across units.

Environmental responsibility is integral to our product development. The glass is fully recyclable, and the steel stand is fabricated from recycled stainless steel. Packaging utilizes biodegradable foam inserts and minimal plastic film, reducing waste while still providing adequate protection during transit. By selecting DONLAB products, customers contribute to a more sustainable laboratory ecosystem.

Key Features

• Durable borosilicate glass construction resists chemicals and high temperatures
• PTFE stopcock provides leak‑free flow control for precise phase separation
• Sturdy steel support stand with adjustable clamp ensures stable positioning
• Polypropylene holder protects the funnel neck and offers a non‑slip grip
• One‑year warranty and responsive technical support for reliable after‑sales service

FAQ

What solvents are compatible with the PTFE stopcock?

The PTFE stopcock is chemically inert to most organic solvents, acids, and bases, including chloroform, dichloromethane, hexane, ethanol, hydrochloric acid, and sodium hydroxide solutions.

Can the funnel be used under vacuum or pressure?

Yes, the glass body and PTFE stopcock are rated for gentle vacuum applications and low‑pressure gas flow, making the funnel suitable for degassing or gentle suction operations.

How do I clean and maintain the funnel?

Rinse the glass with appropriate solvents after each use, remove any residue from the stopcock threads, and store the components in the polypropylene holder to protect the neck from scratches.

Is the steel support stand corrosion‑resistant?

The stand is fabricated from stainless steel with a protective coating, providing resistance to rust and corrosion even when exposed to humid laboratory environments.