The SBA Clonotyping System-C57BL/6-HRP kit is designed for the isotyping of C57BL/6 mouse monoclonal antibodies. It contains 2.5 mg of capture antibody and 1.0 mL of HRP conjugated anti-mouse Ig, mouse IgA, mouse IgG1, mouse IgG2b, mouse IgG2c, mouse IgG3, mouse IgM, mouse κ, mouse λ, and ABTS substrate. The kit may also be utilized for quantitative studies of mouse immunoglobulins in samples such as serum when used in conjunction with the Mouse Immunoglobulin Panel (SB Cat. No. 5300-01B).