Poly's L-Lysine magnetic particles are a type of magnetic particle that is coated with L-Lysine, an amino acid that has a positive charge. The L-Lysine coating on the particles provides a positively charged surface, which facilitates the binding and capture of negatively charged biomolecules such as DNA, RNA, and proteins. Additionally, the magnetic property of the particles allows for easy separation and recovery using an external magnetic field, making them ideal for various separation and purification applications.