Thorough mixing is achieved with the end over end mixing action. This mixer can be supplied with optional fittings to accommodate a range of flasks Bottles and test tubes. For small bottles and flasks, adjustable 3 prong clamps are the most suitable, each clamp can hold containers from 5-70mm diameter up to 250mm long in their plastic coated jaws. For test tubes the RM4CT 4 sided adapter with spring clips is used, clips are available for tubes from 1·5ml to 50ml. For larger bottles, the UMC2 and UMC3 clamps are best suited. The rotating bar is mounted with precision ball bearings and is driven by a custom microprocessor controlled drive system, the large digital display can show set speed or actual speed. The inbuilt electronic timer can be set for 0-99 minutes or 0-99 hours, memory buttons allow for up to 3 speed / time patterns to be stored.