Magose Q, SP, DEAE, and CM are strong anion-exchange agarose magnetic bead media, strong cation-exchange agarose magnetic bead medium, weak anion-exchange agarose magnetic bead medium, and weak cation-exchange agarose magnetic bead medium, respectively. The product is simple to operate, and can be used for fast and efficient purification of small quantities, as well as for high-throughput screening.