QUICKFIT® Flask, Büchner filter, PTFE screw thread hose connector, ground socket NS 24/29, 250mL

Complies with ISO 6556, Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A), Suitable for use under a vacuum due to its heavy wall construction, The glass side-arm features a 13mm screw thread to accommodate a detachable PTFE screw thread hose connector for the safe attachment of 9mm bore vacuum tubing, The flask neck has a ground socket joint, N.B.: Replacement PTFE screw thread hose connectors are available - Item 4510/04