P.I.T. Vortex Mixer is small, compact and reliable. Mixing action starts by pressing a tube on the upper part of the device into the hole. Different test tubes and centrifuge tubes (generally with a maximum diameter of 30mm) can be used with this Vortex Mixer. It has an orbital motion with a rotational speed of 2,600 rpm. The quality and structure of its body has made this product resistant to most of the common laboratory acids and chemicals.