Difco B12 Assay Medium USP, B12 Culture Agar USP, B12 Inoculum Broth, Bacto Agar Bacto Peptone, Baird Parker Agar Base, BCYE Agar Base, Beef Extract, Bacto BG Sulfa Agar, Biggy Agar, Bile Esculin Agar, Biosate Peptone, Biotin Assay Medium, Bismuth Sulfite Agar, Blood Agar Base, Difco Bordet Gengou Agar Base, Brain Heart CC Agar, Brain Heart Infusion, Brewer Anaerobic Agar, Brilliant Green Agar, Brilliant Green Bile 2%, Brilliant Green Bile Agar, Brucella Agar, Brucella Broth, Buffered Listeria Enrich, Buffered Peptone Water