This magnetic stir plate is designed to accommodate flasks up to 5000ml and includes a pH probe holder for added convenience. It is equipped with an on/off switch, a speed control dial, and a screw-in fuse located at the back. Operating on standard 110V power, this stir plate comes with 1 stir bar and boasts a large footprint for enhanced stability during operation. Enhance the quality of your yeast starters effortlessly with this efficient and reliable magnetic stir plate.