Rebeads® NHS Magnetic Beads from Rebio Biotech are functionalized with high-density NHS groups on the surface. They can covalently couple with primary amine (-NH₂)-containing biomolecules such as proteins, antibodies and peptides to form stable amide bonds.
No pre-activation is required; coupling can be achieved by direct mixing. Featuring simple operation, high efficiency and mild reaction conditions, the beads are widely applied in affinity purification, immunoassays, IP/Co-IP and other fields.
Product Advantages
Simple Operation No pre‑activation required; capable of direct covalent coupling with biological ligands.
Fast & Efficient High-efficiency coupling completed within 1–2 hours, with superior coupling efficiency and binding capacity compared to carboxyl magnetic beads.
Mild Reaction Conditions Coupling at room temperature or 4°C, with a system pH range of 4–10.
Stable Conjugation Forms stable amide bonds to prevent ligand shedding; low non-specific adsorption.
Application Test
Coupling Test of AFM1 Monoclonal Antibody on NHS Magnetic Beads (Quantified by Bradford Protein Assay) 
Note: Magnetic bead dosage: 100 μL; Coupling system: 1 mL Coupling Buffer.
As the antibody concentration increases, more antibodies are coupled onto the beads, and the coupling efficiency exceeds 97%.
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