Abstract: An apparatus provides the removal of particular matter from an aqueous carrier such as water, water-based slurry, mine slurry, or the like. Particles below 40 mesh in size can be separated from the aqueous carrier and concentrated with like particles according to their specific gravity and flow characteristics. A plurality of guides are provided for directing the aqueous carrier into different flow paths which are configured to take advantage of the force of gravity for diverting the aqueous carrier into a plurality of drop channels. The drop channels contain additional flow diversion guides for diverting a portion of the primary flow through a respective drop channel. As the aqueous carrier flows through the guides and into the drop channels by gravity, the diversionary flow paths tend to pull matter below a desired density out of a primary drop channel. This enables particulate matter to be separated from the aqueous carrier and to be concentrated at a selected density.