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Addition Funnels

Explore our full range of addition funnel and dropping funnel sizes and configurations

SECO provides a wide selection of addition funnels, with core volume from 3 ml to 2900 ml, available in both graduated and ungraduated formats to suit diverse laboratory needs.


All our dropping funnels are crafted from high-quality 3.3 expansion borosilicate glass, ensuring durability and resistance to thermal shock.


Our collection includes:

Addition Funnel With Graduation Marks
Ungraduated Additional Funnels
Addition Funnel with Pressure Equalizing Arm
Long Stem Addition Funnel
Short Stem Powder Addition Funnel

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Addition funnels for precise control over the temperature, speed, and scope of chemical reactions

Addition funnels, also known as dropping funnels, are essential laboratory tools designed for the meticulous and controlled introduction of reagent solutions into reactions. These cylindrical funnels offer, making them integral for achieving desired outcomes.


Browse our addition funnel selection:

The Addition Funnel with a Standard Tapered Joint and PTFE Stopcock, available with or without graduated marks

The addition funnel (dropping funnel)'s primary function is the controlled addition of reagents, solvents, and other liquids to sensitive reaction mixtures, which is crucial for managing the reaction kinetics effectively. This type of funnel is widely used for layering immiscible liquids in extraction procedures, facilitating the separation of liquids of different densities. In synthetic chemistry, addition funnels are indispensable in reflux and distillation setups, allowing for precise control over reactant addition while maintaining specific reaction temperatures.


Applications: Controlled reagent addition, liquid layering, synthetic chemistry applications.


Durable and reliable Chemical Resistant Long Stem Funnel for versatile liquid handling

Crafted from borosilicate glass, known for its excellent resistance to chemical corrosion and thermal shock, our range of DWK long stem funnels are ideal for handling a broad range of chemicals, including corrosive liquids, solutions, and reagents. The 150 mm long stem provides enhanced control for precise, drip-free pouring into narrow or deep containers, ensuring safe and accurate fluid transfer. Its durability and compliance with rigorous standards also make it a valuable tool for educational and research purposes in laboratories where precision and reliability are critical.


Applications: ASTM and USP compliant for pharmaceutical and clinical applications, chemical filtration and transfer, precise liquid handling, and high temperature applications


Graduated Addition Funnel with Pressure Equalizing Arm for precision liquid handling

This advanced graduated addition funnel features a pressure equalizing sidearm designed to maintain atmospheric pressure within the system, effectively preventing any build-up of excess pressure or vacuum when adding liquids. This functionality is crucial for adding liquids to flasks while preserving an inert atmosphere, thus preventing air ingress and maintaining anaerobic conditions. The clear, cylindrical body of the funnel, coupled with precise graduations and a PTFE stopcock, facilitates the accurate dispensation of specific volumes, essential for reliable titration and precise layering of solutions without mixing. This design ensures controlled flow rates and high visibility, enhancing safety and efficiency in laboratory procedures.


Applications: Reagents addition in synthetic chemistry, distillation and extraction, controlled addition in Schlenk lines, titration, liquid layering, volatile or sensitive chemicals handling.


Durable and Chemical Resistant Powder Addition Funnel with Short, Wide Stem

Meets ASTM Specification E1095, Type IV, and is crafted from borosilicate glass that adheres to USP Type I and ASTM E438, Type I, Class A standards. Short stem powder addition funnels are particularly suited for pharmaceutical and medical research labs requiring stringent compliance. Ideal for use with a range of chemicals, including aggressive solvents, and in processes that involve temperature changes.


Applications: Transferring powders and granular materials, mixing chemicals, high chemical resistant applications, pharmaceutical and biotech applications


Your lab addition funnel specialist

Can't find the addition funnel you need? Reach out to us! At SECO, we're more than just suppliers; we're your partner in sourcing scientific equipment.


We pride ourselves in providing affordable, high-quality laboratory essentials, backed by fast logistics from our Pennsylvania warehouse. This ensures rapid 1 or 2-day delivery to most of the Eastern USA.


Let us equip your lab with the best scientific equipment and supplies. Because quality results begin with quality tools.