Polystyrene magnetic microspheres are known for their uniform particle size distribution, consistent settling rates in magnetic fields, and excellent superparamagnetic properties, making them a staple in various applications. The surface of these microspheres can be chemically modified to attach a variety of functional groups, as well as antibodies, nucleic acids, or proteins with high specificity. These properties render them invaluable for applications such as nucleic acid purification, cell sorting, and immunological assays. Given that the polystyrene matrix of these magnetic microspheres is soluble in organic solvents like acetone and tetrahydrofuran, they should not be used in conjunction with these substances. The product appears as a brownish-tan solid powder that can be easily dispersed in deionized water to create a uniform brown suspension, facilitating its use in experiments.
