ProductsDehydrated mediaB12 Assay Medium B12 Assay Medium SKU: QB-1L-0211 Unit: Each Brand: NUTRI-BACT B12 Assay Medium Other products from «Dehydrated media» Tryptone # QB-45-5002 Letheen Agar # QB-44-2430 Cetrimide Broth # QB-1L-0807 YM-11 Agar # QB-68-5630