Conjugate is present in 10 mM Sodium Phosphate, 0.15 M Sodium Chloride, pH 7.2, 1 % (w/v) BSA, Protease/IgG free. 0.05 % (w/v) sodium azide is added as preservative.Based on immunoelectrophoresis, this antibody reacts with: heavy (\x{03b3}) chains on sheep IgG, light chains on all sheep immunoglobulinsNo reactivity is observed to: non-immunoglobulin sheep serum proteins, IgG from human, mouse or rabbit.BSA and milk have to be replaced by other blocking reagents, like doneky serum or commercial formulations which are free from bovine IgG.