A slurry filtering device for a rechargeable battery is provided for removing foreign metal substances contained in a slurry for manufacturing an electrode plate for a battery. The slurry filtering device includes a slurry pipe in which a slurry flow path along which the slurry moves is formed and a collection space where foreign metal substances are collected on an interior wall; a first magnetic filtering unit installed at a position on one side of the collection space of the slurry pipe and filtering foreign metal substances contained in the slurry moving in a direction of the collection space; a second magnetic filtering unit installed on the slurry pipe at the collection space position and collecting foreign metal substances filtered in the first magnetic filtering unit into the collection space by magnetic force; and a sensor unit that checks the amount of foreign metal substances collected in the collection space.

The present invention relates generally to the concentration of particulate containing samples, such as cells or biomolecules, in order to isolate such particles within a medium and to isolate particle depleted medium. In some embodiments, the present invention relates generally to the separation and/or concentration of cell nuclei from nuclear debris and dead cells.

An in-situ measurement apparatus automatically draws aqueous samples on an intermittent or ad-hoc basis and measures specific metal specie concentration. The apparatus can perform both raw measurement of specific metal specie, as well as processing to convert other species of the same metal to the specific metal specie or to destroy or remove unwanted masking agents (e.g. organics). In one application, dirty water from a scrubber is measured for Se(IV) presence (using a renewable voltametric system), both with and without the masking agents present; in addition, selective processing converts other selenium species to Se(IV), permitting assessment of total selenium and measurement of Se(VI) presence. Automated reactions can then be taken to remove detected toxic substances from waste water without excess reliance on treatment chemicals, and so as to ensure that only water complaint with regulatory standards is released into the environment.

A system and method for detection of cells and sorting of cells are disclosed. Target cells, such as circulating tumor cells (CTCs) or antigen-specific antibody producing circulating memory B cells from COVID-19 patients, may be of interest. Magnetic beads may be bound to the target cells. After which, the bead-bound target cells may be identified using an applied magnetic field. In one example, magnetic sensors may be used to detect movement of the bead-bound target cells responsive to an applied magnetic field. In another example, an optical sensor may be used to detect movement of the bead-bound target cells responsive to an applied magnetic field. Further, separate from identification of the target cells, the bead-bound target cells may be sorted using an applied magnetic field. In this way, a magnetic field may be used for target cell identification and target cell sorting in order to detect and collect target cells of interest at the single-cell resolution.

The present invention relates generally to systems, materials, and methods utilizing magnetic levitation to affect separation and/or concentration of particulate containing samples, such as cells or biomolecules, within a medium. In some embodiments, the methods are used for the separation of a mixture of live cells and dead cells, and to isolate particle depleted medium.