Borosilicate Glass Conical Funnel 125ml BISMAN 24/29J PTFE Stopcock

Description

Product Overview

The 125 ml Borosilicate glass conical separatory funnel from BISMAN is engineered for precise liquid handling in demanding laboratory environments. Constructed from high‑grade borosilicate glass, the vessel offers exceptional chemical resistance, thermal stability, and optical clarity, allowing users to observe phase boundaries with confidence. The integrated PTFE stopcock provides a smooth, leak‑free flow control, while the 24/29 joint configuration ensures a secure, airtight connection to standard laboratory glassware. Each component is carefully ground and polished to minimize dead volume and prevent cross‑contamination, making the funnel ideal for routine extractions, solvent separations, and density gradient preparations. The 125 ml capacity strikes a balance between sufficient volume for most analytical procedures and manageable size for easy handling, storage, and cleaning. Designed with a tapered conical shape, the funnel promotes efficient phase separation, reducing the time required for complete drainage and improving overall workflow productivity.

Usage

This separatory funnel is suited for a wide range of applications across academic, industrial, and pharmaceutical laboratories. Whether performing liquid‑liquid extractions in organic synthesis, separating aqueous and organic phases in environmental testing, or conducting density‑based separations in biochemistry, the funnel delivers reliable performance. Its robust PTFE stopcock can withstand repeated operation with aggressive solvents such as dichloromethane, ether, and hexane, while the borosilicate body resists corrosion from acids and bases commonly encountered in analytical protocols. The funnel’s ergonomic design, featuring a comfortable grip and a well‑balanced weight distribution, facilitates precise manipulation during delicate operations, such as decanting volatile solvents or handling hazardous reagents under a fume hood. Users appreciate the clear visibility of the liquid interface, which enables accurate timing of the stopcock closure to prevent unwanted mixing. The funnel integrates seamlessly with standard laboratory stands, clamps, and ring supports, making it a versatile addition to any bench setup.

Why Choose Us

Choosing BISMAN means selecting a partner committed to quality, reliability, and customer satisfaction. Every funnel undergoes rigorous quality control inspections, including dimensional verification, leak testing, and visual inspection for scratches or inclusions that could compromise performance. Our manufacturing process adheres to ISO‑9001 standards, ensuring consistency across each batch and providing confidence that the product will meet the exacting demands of modern laboratory work. In addition to the superior material selection, BISMAN offers a one‑month satisfaction guarantee, reflecting our confidence in the durability and functionality of the funnel. Should any issue arise, our dedicated technical support team is ready to provide troubleshooting assistance, replacement parts, or a full refund, depending on the situation. We also provide comprehensive documentation, including safety data sheets, usage guidelines, and cleaning protocols, to help users maintain optimal performance over the product’s lifespan. By investing in BISMAN equipment, laboratories benefit from reduced downtime, lower maintenance costs, and a trusted brand reputation that supports scientific excellence.

Key Features

• High‑grade borosilicate glass delivers outstanding chemical resistance and thermal stability for diverse laboratory applications.
• Precision PTFE stopcock ensures smooth, leak‑free flow control even with aggressive solvents.
• 24/29 joint design provides a secure, airtight connection to standard lab glassware, minimizing contamination risk.
• Conical shape promotes rapid and efficient phase separation, saving time during routine extractions.
• Backed by BISMAN’s 1‑month satisfaction service and responsive customer support for peace of mind.

FAQ

What types of solvents can I use with the PTFE stopcock?

The PTFE stopcock is compatible with a broad range of organic solvents, including dichloromethane, chloroform, ether, hexane, and toluene. It also performs well with aqueous solutions and common acids or bases, provided the stopcock is operated within its temperature limits (typically up to 200 °C). For highly corrosive reagents, it is advisable to rinse the stopcock thoroughly after use to maintain optimal performance.

How do I clean and maintain the funnel to ensure longevity?

After each use, rinse the funnel with a suitable solvent to remove residues, then wash with warm soapy water. Rinse again with distilled water and allow the funnel to air‑dry on a clean rack. For stubborn deposits, a mild acid wash (e.g., 5 % nitric acid) can be employed, followed by thorough rinsing. Avoid abrasive cleaning tools that could scratch the glass surface. Regular inspection of the PTFE stopcock for wear is recommended; replace the stopcock if you notice any leakage or reduced flow.

Can the funnel be used for high‑temperature applications?

Yes, borosilicate glass can tolerate temperatures up to approximately 350 °C, making the funnel suitable for procedures that involve heating, such as reflux extractions or distillations. However, the PTFE stopcock has a lower temperature limit (generally around 200 °C). If the process requires temperatures above the PTFE limit, consider using a metal stopcock or allowing the funnel to cool before adjusting the stopcock.

Is the funnel compatible with standard laboratory clamps and stands?

The funnel features a standard 24/29 joint and a tapered neck that fits securely into most laboratory clamps, ring stands, and support brackets. It is designed to work with common glassware accessories, ensuring easy integration into existing setups without the need for specialized adapters.

What warranty or after‑sales support does BISMAN provide?

BISMAN offers a one‑month satisfaction guarantee that covers defects in materials or workmanship. If you encounter any issues within this period, contact our customer service team for assistance. We can arrange a replacement, repair, or refund based on the nature of the problem. Additionally, BISMAN provides ongoing technical support for product usage, cleaning, and troubleshooting throughout the product’s lifecycle.