Supplement B BD Difco™ 6 x 10 ml. Supplement B with Reconstituting Fluid B is used for supplementing media to culture fastidiousmicroorganisms, particularly Neisseria gonorrhoeae and Haemophilus influenzae.May be used with: Eugon Agar (Cat. No. 258910), Proteose No. 3 Agar (Cat. No. 265100).Lyophilized - with Reconstituting Fluid.