Pressure Equalising Funnels Pear shape

Product Code : EL-F-10219

Lab Glassware Manufacturer manufactures, supplies and exports the Pressure Equalising Funnel, Pear Shape from its production facility in Ambala, Haryana, serving school and college laboratories, research institutes and industrial buyers across India and export markets that have recently included El Salvador, Guatemala and Nicaragua — part of a wider base of enquiries from across Central America.

Quick answer: A pressure-equalising funnel has a side arm connecting the space above the liquid to the space below the stopcock, so pressure stays balanced between the funnel and the reaction flask as liquid is added — useful for closed-system or inert-atmosphere reagent addition. This pear-shape version has a socket top, a PTFE key stopcock, and a stem with cone, in capacities of 100ml, 250ml or 500ml and socket sizes of 19/26 or 24/29.

Why Use a Pressure-Equalising Funnel

In a sealed or inert-atmosphere set-up, adding liquid from a standard dropping funnel changes the pressure inside the reaction flask as the liquid level rises there and falls in the funnel, which can cause uneven addition or require venting that risks contaminating the atmosphere. A pressure-equalising funnel's side arm keeps the gas space above the liquid in the funnel connected to the flask, so pressure stays balanced throughout the addition without opening the system. This makes it a standard choice for air-sensitive or moisture-sensitive synthesis work carried out under nitrogen or argon. The cone-and-socket fitting lets it connect directly into a standard ground-glass joint train.

Frequently Asked Questions

What is a pressure-equalising funnel used for?
It is used to add liquid reagents into a sealed or inert-atmosphere reaction set-up without disturbing the internal pressure, common in air-sensitive synthesis work.

What socket sizes are available?
19/26 and 24/29 standard taper joint sizes.

What capacities are available?
100ml, 250ml and 500ml.

Do you export the Pressure Equalising Funnel outside India?
Yes, this funnel is exported to institutional and distributor buyers outside India, with recent enquiries from El Salvador, Guatemala and Nicaragua among other Central American markets. Share the required capacity, socket size and destination country through Contact Us for a quotation.

Related Products

Explore more from the Funnel range: Dropping Funnel Pear Shape PTFE Stopcock, Dropping Funnel Cylindrical, PTFE Stopcock, and the full Laboratory funnel category.

Request a Quote

Interested in the Pressure Equalising Funnel, Pear Shape for your lab, school or export order? Contact Us for a quotation, or visit the Tenders page for bulk and institutional procurement.

Last updated: September 2026.