Goat anti-human IgM (u chain), F(ab)'2 fragment is a biotin conjugated secondary antibody, which binds to human IgM (u chain), F(ab)'2 fragment in immunological assays. Min. cross-reactivity to human IgG or IgA. Antibody purity is > 90% based on SDS-PAGE. Antibody solution may contain small amounts of intact IgG.