The Thomas 945759 Single Tube Holder accepts a single 15mL or 50mL conical centrifuge tube and has a magnetic base that allows attachment to the top of a Thomas vortex mixer for hands-free mixing. It accommodates a tube with a length from 6.4cm to 11.4cm (2.5 to 4.5 inches), and a minimum diameter of 1.9cm (0.75").
Thomas Scientific manufactures instruments, equipment, supplies, and chemicals for laboratory and scientific applications. The company, founded in 1900, is headquartered in Swedesboro, NJ.