Constantly stir tissue culture applications at a low speed with Nalgene™ Suspended Magnetic Stir Bars. Legs can be compressed to fit through 1.5in. (38mm) openings. Stir bar is slightly raised off the bottom surface of the vessel to minimize grinding effect on cells. Consistant action at low speeds and excellent resistance to chemicals and temperatures up to 150°C. Alnico V magnet encapsulated in PTFE with ETFE bracket.