Specific for independent constantly expressed epitope of lambda chain. Reacts with monomer and dimer forms of free lambda chains but not with lambda chain-bearing immunoglobulins. Specific antibody titer: 1/100 000 (indirect ELISA). Can be used for detection of lambda Bence-Jones proteins in ELISA (for coating and as conjugate) and for immunohistochemistry on cryostat or paraffine-embedded sections; for immunoaffinity purification of light chains and in WB