Vibrational mixing action - ideal for microtitre plates. Digital selection of mixing speed. Built-in digital timer or continuous operation. Optional tube holders available for mixing microcentrifuge tubes. Designed for use with microtitre plates and microcentrifuge tubes. The aluminium tray is fitted with a specially designed mat that securely holds in place up to four wellplates. High speed combined with a tiny orbit creates the vibrational shaking action required for mixing the very small volumes contained in the wells or in microcentrifuge tubes. Speed is variable from 250 to 1250 rpm and is easily set via the digital display. Shaking times can be set from 1second to 9999 minutes on the built in digital timer. The unit can also be set for continuous operation. Tube holders are available as optional accessories. They fit securely onto the platform turning the unit into an effective tube mixer. With BioCote; silver-based; antimicrobial protection.