The antibody is supplied in Tris buffer (pH 7.3–7.7), with 1% BSA as a stabilizer and <0.1% sodium azide as preservative. This antibody is designed for immunofluorescence (IF) applications to detect Kappa light chain proteins in formalin-fixed, paraffin-embedded (FFPE) human tissue. It is suitable for identifying normal or abnormal expression patterns in tissues. Use is restricted to trained laboratory professionals.