Letheen Agar Base, Modified
| Catalog Name |
Catalog Number |
Acumedia |
BD / Difco |
BD / BBL |
Oxoid |
Merck |
| Letheen Agar Base, Modified (7495) |
263110 |
N/A |
N/A |
N/A |
N/A |
1.10404 |
Intended Use
Letheen Agar Base, Modified is specifically designed for the isolation of microorganisms from cosmetics when used in conjunction with Tween 80 (Polysorbate 80). Its formulation provides an effective means to identify potential microbial contamination in cosmetic products.
Product Summary and Explanation
Developed in 1948 by Weber and Black, the Letheen Agar Base, Modified stands as a pivotal advancement in microbial testing. This highly nutritional solid medium incorporates neutralizing agents to halt the activity of quaternary ammonium compounds found in sanitizers.
The formulation features the synergistic addition of Lecithin and Tween 80 (Polysorbate 80) to Tryptone Glucose Extract (TGE) Agar. This combination is essential in fully neutralizing disinfectants, mitigating the risk of false-negative results during tests assessing germicidal activity.
Recognized in the FDA Bacteriological Analytical Manual, Letheen Agar Base, Modified is a refined version of the traditional Letheen Agar Base and is recommended for microbiological testing protocols concerning cosmetics. Ensuring total neutralization of disinfectant residues, this medium plays a crucial role in achieving accurate test outcomes and safeguarding product quality.
