Dropping Funnels (cylindrical)

Dropping Funnels (Cylindrical) are essential laboratory glassware instruments designed for the controlled, metered addition of liquid reagents into reaction vessels. Fabricated from premium borosilicate glass, their streamlined cylindrical profile provides a uniform cross-section that facilitates steady hydrostatic pressure, allowing for reliable drop-rate regulation during prolonged chemical procedures.

The cylindrical shape makes these funnels exceptionally space-efficient, allowing them to fit easily into crowded multi-neck flasks, distillation columns, and complex organic synthesis lattices. They feature precision interchangeable ground glass joints that ensure a gas-tight, vacuum-capable seal, which is critical for maintaining moisture-sensitive or inert atmospheres within a closed system.

Key Features

• Manufactured from premium borosilicate 3.3 glass for maximum chemical resistance and thermal durability
  
• Space-saving cylindrical design optimized for dense multi-neck flask and scaffolding arrangements
  
• Available with high-grade interchangeable PTFE or glass stopcocks for precision-metered flow control
  
• Precision-ground interchangeable upper sockets and lower cones to eliminate atmospheric or fluid leaks
  
• Heavy-wall structural engineering designed to withstand regular mechanical handling and clamping stresses
• International Standards

Our cylindrical dropping funnels are engineered and manufactured in strict compliance with globally accepted dimensional and quality parameters, ensuring seamless compatibility across international markets:

• ISO 4800 – Laboratory Glassware – Separating Funnels and Dropping Funnels
  
• ISO 383 – Laboratory Glassware – Interchangeable Conical Ground Joints
  
• ASTM E438 – Standard Specification for Glasses in Laboratory Apparatus Manufacturing
• Available in multiple capacities (e.g., 50ml, 100ml, 250ml, 500ml, 1000ml) with standard joint configurations (such as 14/23, 19/26, 24/29, 29/32). Customizations including graduation lines, pressure-equalizing tubes, and specialized drip tips can be manufactured per bulk specification.

Applications

Extensively utilized in synthetic organic chemistry, pharmaceutical R&D setups, academic teaching laboratories, industrial pilot plants, and specialized chemical extractions requiring highly regulated, continuous reagent addition.

Why Choose Our Products

• Export-grade glassware featuring optimal optical clarity and structural stress relief via thorough thermal annealing
  
• Precision stopcock assemblies that prevent fluid bypass, ensuring reliable dropwise introduction
  
• High structural compatibility with all standard international laboratory glassware lines
  
• Trusted OEM manufacturing partner for global laboratory equipment catalog vendors, procurement agencies, and wholesale distributors