EISCO Buchner Filtering Flask, 100ml - Socket Size 24/29 - Interchangeable Joint - Side Arm - Borosilicate Glass

This Eisco 100ml Buchner filtering flask is built for vacuum filtration in high school, university, and research lab settings where reliable glassware and a secure joint fit matter.The flask is made from borosilicate 3.3 glass, which is autoclavable and holds up to repeated thermal cycling. Heat tolerances: strain point 515°C, annealing point 565°C, softening point 820°C. The glass also resists a broad range of common lab chemicals, making it a durable choice for filtration setups that see regular use.A 24/29 interchangeable ground glass joint sits at the top opening and at the side arm port, so the flask connects directly to standard lab glassware without requiring specialty adapters. The side arm is sized at 0.75 inches, consistent with typical vacuum tubing used in Buchner filtration setups.Physical dimensions: 4 inches tall, 2.5-inch base diameter. The low profile keeps the flask stable under vacuum without additional support beyond a standard clamp.Sold individually. No stopper is included. To complete a filtration assembly, add a Buchner funnel, a rubber stopper or adapter sized for the 24/29 joint, vacuum tubing, and a vacuum source.

• 100ml capacity with a 24/29 interchangeable ground glass joint at both the top opening and side arm — fits standard lab glassware setups without adapters
• Built from borosilicate 3.3 glass rated to a softening point of 820°C, with strain point 515°C and annealing point 565°C, making it resistant to thermal shock during vacuum filtration
• Heavy-duty wall construction and autoclavable borosilicate 3.3 glass provide strong chemical resistance for repeated use across teaching and research filtration workflows
• Compact footprint: 4 inches tall with a 2.5-inch base diameter and a 0.75-inch side arm socket — stable on the bench and easy to clamp in a standard ring stand setup
• Sold as a single flask; no stopper included — pair with a compatible Buchner funnel, vacuum tubing, and rubber stopper sized for a 24/29 joint to complete the filtration assembly