Ideal for mixing and development of cultures, chemicals, solvents, assays, etc. Production of basic chemicals, pathological work, and various other applications, for shaking solution in Erlenmeyer Flask offered in interchangeable top platform to hold different sizes of flasks in different quantities. A. C. Single phase motor is standard . As per your request we also have variable speed digital meter with speed regulator. The orbital diameter of 35 mm and shaking speed of 180 RPM is standard.