German company Retsch's new Mixer Mill MM 400 offers fast and efficient homogenisation of small sample volumes in the laboratory. It processes a wide variety of materials and achieves grind sizes down to 5µm.
The MM 400 features two grinding stations and allows for the preparation of up to 20 samples simultaneously. A classic field of application is reproducible dry grinding, e.g. for sample preparation for subsequent XRF analysis.
Thanks to screw-top, leak-proof grinding jars, wet grinding can be carried out with 100% material recovery. For cryogenic grinding of temperature-sensitive samples, the mill offers the crucial advantage that 1-2 minutes of external cooling of the sample inside the grinding jar is sufficient to embrittle the sample material.
The wide range of accessories for the MM 400 includes grinding jars in six different materials in sizes from 1.5-50ml, as well as adapter racks that can be equipped with 5 or 10 reaction vials. These are used for the disruption of cells and plant and animal tissue.
Nine parameter combinations can be stored and reproducible results achieved thanks to digital setting of grinding time and vibration intensity.