QUICKFIT® Davies double-surface condensers with ground joints, manufactured from 3.3 expansion borosilicate glass in compliance with ISO 3585 (ASTM E-438 Type 1 Class A). These highly efficient condensers provide a large cooling surface and are suitable for distillation, reflux, and Soxhlet extraction, particularly for low-boiling-point substances. The inner cooling surface creates a baffle effect, while the outer surface prevents liquid creep. Supplied with detachable plastic screw-thread connectors for safe and easy connection of 9 mm bore flexible tubing.