Nickel-IDA Magnetic Agarose Beads consist of a ferrimagnetic core that is coated with 6 % cross-linked Agarose coupled to Ni2 positive and negative ions via an Iminodiacetic acid (IDA)-linker has a density of > 15 μmol Ni2+/ml beads thats ph is between 3-12. Ni-IDA Magnetic Agarose Beads has chemical stability to all solutions commonly used during the purification procedure.