Description
Product Overview
The EISCO Squibb Separating Funnel 500ml is engineered for laboratory professionals who demand reliability, precision, and durability in liquid‑liquid extraction tasks. Constructed from high‑quality borosilicate glass, the funnel offers exceptional chemical resistance, allowing it to withstand aggressive solvents, acids, and bases without compromising structural integrity. The glass body features clear white graduations that enable accurate volume measurements down to the milliliter, reducing the need for auxiliary measuring devices. A robust glass key stopcock provides smooth, controllable flow, minimizing turbulence and preventing cross‑contamination between phases. The interchangeable 24/29 plastic stopper, made from chemically inert polymer, fits securely into the socket, creating a leak‑free seal while allowing quick removal for cleaning or replacement. With a total height of 14 inches and a 4‑inch diameter, the funnel occupies minimal bench space yet provides ample capacity for batch extractions, phase separations, and small‑scale syntheses. The 2.25‑inch stem facilitates easy attachment to standard laboratory stands, clamps, or rotameters, enhancing stability during prolonged operations. Detailed specifications include a product dimension of 4 × 4 × 14 inches and a weight of 11.2 ounces, making it lightweight enough for handheld manipulation yet sturdy enough to endure repeated use. The model CH0476CGR has earned a 4.9‑star rating from 25 verified customers, reflecting consistent performance and user satisfaction across diverse scientific disciplines. In addition to its core functionality, the funnel’s design incorporates a reinforced neck that distributes stress evenly, reducing the likelihood of cracks during accidental drops or impacts. The transparent glass also allows visual monitoring of phase boundaries, which is essential for precise timing of stopcock operation. Overall, the EISCO Squibb Separating Funnel combines material excellence with ergonomic design to meet the rigorous demands of modern laboratory workflows.
![[Product front view showing all components]](https://www.galtra.store/wp-content/uploads/2026/07/e566f4dc2a6c40428d65fd4b20d5c6ae.jpg)
Usage
This separating funnel is ideally suited for a wide range of laboratory applications, from organic chemistry extractions to environmental sample processing. In a typical acid‑base extraction, the user adds the aqueous and organic layers into the funnel, secures the 24/29 plastic stopper, and gently inverts the vessel to mix the phases. The glass key stopcock then allows controlled drainage of the denser layer, while the lighter phase remains in the funnel for subsequent collection. The clear graduations assist in monitoring volume changes during the process, ensuring precise separation ratios. The funnel also performs reliably in distillation setups, where it can serve as a receiver for condensed vapors, thanks to its heat‑resistant borosilicate composition. Researchers conducting small‑scale pharmaceutical syntheses appreciate the funnel’s ability to handle viscous liquids without clogging, as the smooth interior surface reduces adhesion of residues. Additionally, the interchangeable stopper design simplifies decontamination after handling hazardous substances; the plastic component can be removed, soaked, and autoclaved separately, extending the overall lifespan of the glass apparatus. The funnel’s compact footprint makes it compatible with standard fume hoods, rotary evaporators, and bench‑top centrifuges, providing flexibility for laboratories with limited space. For environmental testing, the funnel can be used to separate oil‑water mixtures, allowing precise quantification of contaminant levels. In teaching laboratories, its transparent construction and easy‑to‑operate stopcock make it an excellent demonstrative tool for illustrating phase separation principles to students. The device’s durability also supports repetitive use in high‑throughput screening environments, where rapid setup and teardown are essential. Whether employed in academic research, industrial quality control, or field‑based analytical labs, the EISCO Squibb Separating Funnel delivers consistent performance and user‑friendly operation.
Why Choose Us
Choosing the EISCO Squibb Separating Funnel means investing in a product that combines superior material science with thoughtful engineering. Borosilicate glass is renowned for its low thermal expansion coefficient, which translates to reduced risk of cracking under rapid temperature changes—a critical advantage when the funnel is used in hot‑plate extractions or flash chromatography. The glass key stopcock is machined to tight tolerances, delivering a leak‑free seal that maintains consistent flow rates, thereby improving reproducibility of experimental results. The 24/29 plastic stopper is manufactured from a high‑density polymer that resists swelling and degradation, ensuring a tight fit even after repeated exposure to aggressive chemicals. EISCO’s commitment to quality is reflected in rigorous testing protocols that verify each unit for dimensional accuracy, pressure resistance, and chemical compatibility before it reaches the customer. Moreover, the company offers responsive technical support and a straightforward return policy, giving users confidence that any concerns will be addressed promptly. With a proven track record of high customer ratings and a best‑seller rank within the laboratory equipment category, the funnel stands out as a reliable choice for academic, industrial, and research institutions alike. EISCO also provides comprehensive documentation, including detailed user manuals, safety data sheets, and maintenance guidelines, which help laboratories maintain compliance with regulatory standards. The brand’s global distribution network ensures that replacement parts, such as stopcocks and stoppers, are readily available, minimizing downtime in critical workflows. Finally, the company’s sustainability initiatives, including recyclable packaging and environmentally responsible manufacturing processes, align with the growing demand for green laboratory practices.
Key Features
- Heavy‑duty borosilicate glass provides exceptional chemical resistance and thermal stability for demanding laboratory environments.
- Clear white graduations enable precise volume measurement, reducing the need for additional measuring tools.
- Glass key stopcock offers smooth, controllable flow to prevent turbulence and ensure accurate phase separation.
- Interchangeable 24/29 plastic stopper creates a leak‑free seal and is easy to remove for cleaning or replacement.
- Responsive customer support and hassle‑free warranty give users confidence in long‑term product performance.
FAQ
What types of chemicals can the funnel safely handle?
The borosilicate glass construction is compatible with most organic solvents, acids, bases, and aqueous solutions. It resists corrosion from strong acids such as hydrochloric or sulfuric acid and can tolerate alkaline solutions up to pH 14. However, it is not recommended for hydrofluoric acid or highly concentrated hydrohalic acids, which can etch glass.
Can the stopcock be replaced if it becomes damaged?
Yes, the glass key stopcock is a standard component that can be sourced separately from EISCO or authorized distributors. Replacement involves unscrewing the existing stopcock, cleaning the seat, and installing the new unit according to the manufacturer’s instructions. This modular design extends the overall service life of the funnel.
Is the funnel compatible with standard laboratory clamps and stands?
The 2.25‑inch stem is designed to fit universally with most laboratory clamps, ring stands, and rotary evaporator assemblies. Users can securely attach the funnel to a stand for hands‑free operation, which is especially useful during prolonged extractions or when the funnel must remain stationary under a fume hood.
How should the funnel be cleaned after use?
After completing an experiment, disassemble the stopper and stopcock, then rinse the glass body with a suitable solvent (e.g., ethanol or acetone) followed by distilled water. For stubborn residues, soak the funnel in a mild detergent solution and gently brush the interior with a soft‑bristled brush. Finally, dry the funnel with lint‑free wipes or allow it to air‑dry before reassembly.
What warranty does EISCO provide for this product?
EISCO offers a one‑year limited warranty covering manufacturing defects in materials and workmanship. If the funnel arrives damaged or develops a defect under normal use, customers can contact EISCO support for a replacement or repair, subject to verification of the issue.
Can the funnel be used for temperature‑sensitive processes?
Yes, the borosilicate glass used in this funnel has a low coefficient of thermal expansion, allowing it to endure rapid temperature changes without cracking. This makes it suitable for processes such as hot‑plate extractions, reflux operations, and flash chromatography where the apparatus may be exposed to elevated temperatures.
Is the plastic stopper reusable after cleaning?
The 24/29 plastic stopper is designed for repeated use. After each experiment, it should be removed, thoroughly cleaned with an appropriate solvent, and inspected for any signs of wear or damage. Provided it remains intact, the stopper can be reinstalled and will continue to provide a reliable, leak‑free seal.
What is the recommended storage condition for the funnel?
Store the funnel in a clean, dry environment away from direct sunlight and extreme temperature fluctuations. It is advisable to keep the funnel upright, preferably in a protective case or on a padded shelf, to prevent accidental impacts that could compromise the glass integrity.
Does the funnel meet any industry standards?
The EISCO Squibb Separating Funnel complies with common laboratory standards for glassware, including ASTM B270 for borosilicate glass and ISO 9001 quality management practices. These certifications ensure that the product meets established criteria for safety, performance, and durability.
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