Store at 2 to 8 degree C in the dark. For long-term storage of the concentrated antibody, it is recommended that aliquots of the antibody be frozen at -20 degree C in glycerol 50% (frost-free freezers are not recommended). Repeated freezing and thawing must be avoided. Dilute using an antibody diluent such as ImmunoDector Protein Block/Antibody Diluent or ImmunoDNA Background Blocker.