Dropping Funnel Cylindrical with Relief Tube Glass Stopcock is manufactured from heat-resistant, durable borosilicate glass in accordance with DIN/ISO standards, ensuring reliable and safe performance in laboratory environments. The cylindrical body is fitted with clear graduation marks, allowing precise control and measurement of liquids during addition to reaction vessels.

The integrated relief (pressure equalizing) tube ensures smooth and controlled flow by balancing internal pressure, which is particularly important in closed-system reactions. Volume graduations and inscriptions are printed with white enamel, providing excellent visibility and long-term durability.

The funnel features perfectly ground NS necks with smooth interior surfaces, enabling tight, leak-free connections with standard laboratory glassware. Its thick-walled construction and reinforced rim significantly reduce the risk of breakage during washing, handling, and transportation. The product is supplied with a P.E. stopper and a precision glass stopcock, allowing accurate regulation of liquid flow.

This dropping funnel is widely used in chemistry laboratories, research facilities, and educational institutions for controlled reagent addition, synthesis reactions, and analytical procedures.

Usage Areas

• Controlled addition of liquids

• Closed-system chemical reactions

• Distillation and synthesis setups

• Educational and training laboratories

Advantages

• High-quality borosilicate glass construction

• Cylindrical design with clear volume graduations

• Relief tube for pressure equalization

• Precision glass stopcock for accurate flow control

• Reinforced rim for improved durability

Technical Specifications

• Product Type: Dropping Funnel, Cylindrical

• Material: Borosilicate Glass

• Standards: DIN / ISO compliant

• Graduations: White enamel printed

• Stopcock: Glass

• Accessories: P.E. stopper included

Safety and Storage Information

• Handle glassware carefully to prevent impact damage

• Avoid sudden temperature changes

• Clean using appropriate laboratory glassware methods

• Store in a secure and padded environment

Usage Notes

• Ensure proper seating of NS joints before use

• Open stopcock gradually for controlled liquid flow

• Recommended for supervised laboratory use