The Refrigerated Centrifuge option enables the integration of a refrigerated centrifuge manufactured by Sigma Laboratory Centrifuges within the automated sample preparation process using the MultiPurposeSampler MPS. The refrigerated centrifuge is capable of centrifuging and cooling up to 20 samples at the same time. The Refrigerated Centrifuge option is suitable for phase separation performed as part of a liquid-liquid or solid-liquid extraction. It is available for vials of different sizes and achieves accelerations of up to 5000g. The centrifuge is characterized by its large capacity and integrated cooling device. The system is controlled using the MAESTRO software. Within the software itself, all preparation steps can be prepped ahead to save time.
Functional principle of the Refrigerated Centrifuge option
The centrifuge stands on a laboratory bench below the MPS. The MPS transports samples in closed vials into the centrifuge. In the centrifuge, the samples are centrifuged and simultaneously cooled, if needed. The temperature and speed involved can be set individually. Once centrifugation has been performed, the MPS removes the vials. The phase that is of interest can either be transferred into a new vial and processed further or injected immediately. The centrifugation step can be incorporated at any point within the automated sample preparation process using the MPS.
Using the Refrigerated Centrifuge option, you can completely automate liquid-liquid and solid-liquid extractions using the MPS. Phase separation during liquid-liquid extraction is performed rapidly and safely. Centrifugation prevents solids from contaminated samples from entering the analytical system. Depending on the vial size, the centrifuge can accommodate between 12 and 20 vials and therefore achieves a particularly high sample throughput. During centrifugation, the samples can be cooled to -4 °C. Cooling counterbalances frictional heat, thereby protecting sensitive samples. Its heavy weight makes the centrifuge very stable and keeps vibrations to a minimum. Thanks to the MAESTRO software, controlling the system as a whole is simple and intuitive.
Rotors for vials of different sizes are available for the centrifuge. The maximum possible acceleration during centrifugation will depend on the vial sizes used.