Devices for physically separating biological samples and methods for separating biological samples are disclosed. An example device may include a vessel for holding a biological sample. The biological sample may include a plurality of cells and a fluid. A filter membrane may be disposed within the vessel and positioned adjacent to an end region of the vessel. An auger member may be disposed within the vessel. The auger member may be designed to drive cells within the biological sample into contact with the filter membrane.

An all-terrain rover has a ladder frame having one or more crosspieces, two drive units connected on opposite sides of the frame, first and second auger cylinders engaged with the drive. The drive units are in contact with the axes of the auger cylinders and the flange of the first cylinder is wound in an opposite direction to the flange of the second cylinder. The cylinders are counter-rotated to urge the rover forward. Sampling equipment is mounted on the frame. In an embodiment, each cylinder further comprises a conical end cap at each end. Each cylinder may have a frustaconical end cap at each end, and each cylinder may be buoyant.

Inline particle size analyzing device for continuous measurement of particle sizes of a continuously taken measurement sample of a bulk material ground by a mill includes a main conduit having a main conduit inlet opening and a main conduit outlet opening, a bypass conduit, which has a bypass conduit inlet opening and a bypass conduit outlet opening that are fluidically connected for continuously transporting the continuously collected measurement sample of the bulk material via a bypass conduit channel from the bypass conduit inlet opening and the bypass conduit outlet opening which is designed to continuously take a measurement sample of the bulk material transported in the main conduit channel and to continuously supply it to the bypass conduit channel via the bypass conduit inlet opening, and a particle measuring device provided in the bypass conduit channel.