Used for suspension cell culture with a magnetic stirrer, the Double-Sidearm Celstir® with water jacket allows precise temperature control of its contents. The hose connectors accept 1/4" (6.35mm) ID tubing. Constructed of autoclavable borosilicate glass that conforms to USP Type I and ASTM E-438 Type I, Class A requirements. The 500 and 1000mL sizes can also be used with Wheaton Vented Cap Cat. No. 12-W240751.