Purity of this preparation is > 95% based on SDS-PAGE. Antibody concentration is 1.0 mg/ml. Antibody is supplied in 10 mM sodium phosphate, 0.15 M sodium chloride, pH 7.2.1 % (w/v) B, Protease/IgG free. Contains 0.1 % (v/v) Kathon CG as preservative of bacterial growth.Based on immunoelectrophoresis, this antibody reacts with:  heavy chains on human IgG,  light chains on all human immunoglobulins. Based on immunoelectrophoresis, no reactivity is observed to:  non-immunoglobulin human serum proteins.