High grade Lowenstein Jensen Medium Base w/o Glycerol is supplied by Micromaster. It is available in the form of a greenish blue to peacock blue homogeneous free flowing powder. For maximum efficiency, it must be stored below 30C in tightly closed container.

Quantity provided: 500g /pack

The LwensteinJensen medium, often referred to as LJ medium, is a growth medium specially used for culture of Mycobacterium species, notably Mycobacterium tuberculosis. Egg-based or agar-based solid media are used for the isolation and cultivation of Mycobacteria. Egg-based media contain whole eggs or egg yolk, potato flour, salts and are solidified by inspissation. Lowenstein-Jensen Medium is the most commonly used egg-based media. L.J. Medium was originally formulated by Lowenstein, containing congo red and malachite green dyes. Jensen modified Lowensteins media by altering the citrate and phosphate contents, eliminating the congo red dye and by increasing the malachite green concentration. Malachite green serves as an inhibitor and also as pH indicator. Penicillin and Nalidixic acid along with malachite green aid in preventing growth of major contaminants surviving decontamination, while encouraging earliest possible growth of Mycobacteria. This medium supports the growth of a wide variety of Mycobacteria and can also be used for niacin testing.