The manufacturer of the Scientific Industries G-560 Vortex Genie 2 is Scientific Industries, Inc. The Scientific Industries G-560 Vortex Genie 2 is a rugged and reliable vortex mixer. The Vortex G-560 offers variable speed control allowing slow speed shaking action up to high speed vortexing. The Vortex- Genie 2 is built with a tough metal housing, combined with just enough weight, providing a stable platform for all types of mixing. The Scientific G-560 Vortex Genie-2 has speeds from 600 to 3200 RPM. The pre-owned products will be thoroughly cleaned and fully tested to perform at manufacturer specifications before shipping.