Luria Agar Base (Miller) BD Difco™ 500 g. Used for maintaining and propagating Escherichia coli in molecular microbiology procedures with or without added glucose. Nutritionally rich medium designed for growth of pure cultures of recombinant strains, based on the Luria agar and broth formulae described by Miller. Contains one-tenth and one-twentieth, respectively, the sodium chloride level of the, LB Agar Lennox and LB Agar, Miller formulations. This allows the researcher to select the optimal salt concentration for a specific strain. The medium may be aseptically supplemented with glucose, if desired.