Laboy Glass Pressure-Equalizing Dropping Funnel with PTFE Stopcock and Standard Taper Joints

Design: The Laboy Pressure-equalizing Dropping Funnel features an additional narrow-bore glass tube from the upper part of the funnel bulb to the ground glass joint around the stem at the bottom. It also has a standard taper glass outer joint at the top and an inner joint at the bottom, with a PTFE stopcock on the upper bottom glass joint.
Usage: This type of dropping funnel is ideal for use in chemistry processes where pressure needs to be equalized, such as in gas washing and liquid-liquid extractions. The narrow-bore glass tube helps to ensure that pressure is equalized between the two phases, making it easier to control the rate of flow during the experiment.
Material: The funnel is made of high-quality borosilicate glass, which is heavy-wall designed and hand-blown to ensure uniform wall thickness. It is also annealed at 800 degrees Celsius, making it durable and able to withstand typical laboratory thermal variations, including heating and cooling.
Craft: The funnel is carefully crafted by skilled glassblowers to ensure its high quality and reliability. The PTFE stopcock is designed for smooth and precise operation, and the standard taper glass outer joint and inner joint are carefully fused together to provide a secure and leak-free seal.
Guarantee: Laboy offers a 100% 40-day money-back guarantee. If you are not satisfied with the quality or performance of the funnel, you can return it for a full refund, no questions asked.