We offer high performance affinity particles to meet your needs for antibody purification and immunoprecipitation (IP) assays in two versatile formats, affinity resin and magnetic beads. Our protein G agarose affinity resin for antibody purification is available in formats ranging from agarose beads, pre-packed spin columns, 96-well filter plates, and complete IgG purification kits. Our protein G magnetic beads can be used as affinity particles for antibody purification and IP methods using manual or robotic magnetic separators.

Which particle and format is right for you?

  Protein G Agarose Protein G Magnetic Beads

Particle size

45–165 microns

1 micron

Maximum Linear Velocity

30 cm/hour



6% cross-linked agarose

Surface blocked magnetic bead

Binding capacity

11-15 mg human IgG/mL resin

600 µg rabbit IgG/mL beads

Available as beads

Prepacked Cartridges


Spin Columns


96 well spin plate


Complete Purification Kit





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Partner with us to scale-up your process or product development pipeline with bulk quantities of high-quality immunoassay reagents and biochemicals. We offer a variety of compounds, devices, and resins for your large-scale applications.

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Complete request form

Guide to antibody purification