The Scientific Industries SI-H506 Horizontal Tube Holder snaps directly onto Vortex-Genie 2 and Vortex-Genie Pulse mixers (sold separately) to hold six 50mL tubes horizontally.
Scientific Industries manufactures laboratory equipment such as shakers and mixers, homogenizers, and incubators under the Vortex-Genie and Genie brands. The company, founded in 1954, is headquartered in Bohemia, NY.