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