Vibrating shaker, VXR basic Vibrax®, accessory attachments VX 1 one-hand attachment For shaking single, non-fixed vessels of 1ml to 250ml. VX 2 test tube attachment For up to 36 test tubes or centrifugal tubes with a diameter of 16mm. VX 2E *Eppendorf* attachment For intensive shaking of up to 64 *Eppendorf* tubes (1.5ml).