The RotoBot™ Rotating Mixers feature advanced programming options that far surpass that of the traditional laboratory rotator. With digital speed control and more than 10 operating modes, the RotoBot can be selected to perform a wide variety of rotating, mixing and vibrating actions. In addition, these actions can be combined in succession using the C1 and C2 Custom Modes , providing the user with a nearly infinite level of programming. The RotoBot and RotoBot Mini each inlcude an assortment of vertical tube holders. The Mini model is supplied with holders for 12 x 1.5ml tubes, 2 x 15ml & 2 x 50ml tubes;For higher capacity applications, more of these holders can be purchased as accessories. In addition, horizontal holders are available for applications such as Western blotting and hybridization. The unique, sliding attachment allows for quick and easy changing of tube holders. For rocking applications, a platform with a non-slip rubber mat is available. Once attached, simply select the PP mode to turn the rotator into a platform rocker. Sepcifications Speed: Variable, 1 to 80 rpm Capacity, R4040: 6 x 50, 10 x 15, or 60 x 1.5ml Timer: 1 sec to 99hr. 59 min / or Continuous Operating Temp. Range +2 to +70°C Dimensions: (w x d x h) 11.4 x 5.4 x 7.8 in. / 29 x 13.7 x 19.9cm (R4040) Rocking plateform: Plateform: R4040-RP Rocking platform (w/flat mat) for R4040, 6 x 5.5in. Weight: 4 lbs (1.8kg) / 5 lbs (2.27kg) Electrical: 100V to 240V, 50-60Hz, 3A