Description
Specifications Table
| Product Name | EMB Agar, Levine Plate | MP022-50PT | Himedia |
|---|---|
| Quantity/Pack Size | 50 plates |
| Form | Pre-poured plates |
| Grade | Laboratory grade |
| Application | Differentiation of coliforms and fecal contaminants |
Product Description
EMB Agar, Levine Plate | MP022-50PT | Himedia is a ready-to-use selective and differential microbiological culture medium designed for the isolation and differentiation of Gram-negative enteric bacteria, particularly members of the family Enterobacteriaceae. Eosin Methylene Blue (EMB) Agar, Levine formulation, is widely used for the examination of samples where the detection and differentiation of enteric Gram-negative organisms are required.
The medium contains eosin Y and methylene blue dyes, which provide selective properties by inhibiting many Gram-positive bacteria while allowing Gram-negative organisms to grow. These dyes also contribute to the differential characteristics of the medium by responding to carbohydrate fermentation. This makes EMB Agar useful for distinguishing lactose-fermenting organisms from non-lactose-fermenting bacteria based on colony appearance.
Lactose-fermenting microorganisms produce acid during fermentation, which interacts with the dyes and can result in distinctive colony colors. Strong lactose fermenters may produce dark colonies and, under suitable conditions, a characteristic green metallic sheen. Non-lactose fermenters generally produce pale, colorless, or less intensely colored colonies. These visual reactions can assist laboratory personnel in selecting colonies for further identification.
Levine EMB Agar is commonly used in microbiological examination of clinical, food, water, environmental, and other samples. It can be particularly useful for the preliminary differentiation of enteric bacteria and for screening samples for organisms such as Escherichia coli. However, colony morphology and color reactions should be considered presumptive findings and should be confirmed using appropriate biochemical, molecular, serological, or other validated identification methods.
The MP022-50PT format is supplied as a prepared, ready-to-use agar plate. This convenient format eliminates the need for laboratories to weigh and prepare individual medium components, sterilize the medium, and pour plates manually. It can help save preparation time while supporting greater consistency across routine microbiological testing.
EMB Agar Levine Plates may be suitable for use in clinical microbiology, food and beverage testing, water quality analysis, environmental monitoring, pharmaceutical microbiology, research, and educational laboratories. The selective and differential properties of the medium make it useful as part of a broader microbial isolation and identification workflow.
The prepared plates should be stored and handled according to the manufacturer’s recommended conditions. Samples should be inoculated using appropriate aseptic techniques, and incubation and interpretation should follow the applicable validated laboratory method. Appropriate controls should be included whenever required to ensure reliable testing performance.
Overall, the Himedia EMB Agar, Levine Plate provides a convenient ready-to-use medium for selective growth and preliminary differentiation of Gram-negative enteric bacteria, with lactose fermentation reactions helping laboratories distinguish different colony types during microbiological examination.
FAQs
1. What is EMB Agar, Levine Plate used for?
EMB Agar, Levine Plate is used for the selective isolation and differentiation of Gram-negative enteric bacteria. It is particularly useful for distinguishing lactose-fermenting organisms from non-lactose-fermenting bacteria.
2. What does EMB stand for?
EMB stands for Eosin Methylene Blue, referring to the two dyes incorporated into the medium. These dyes contribute to the selective and differential properties of the agar.
3. What is the purpose of eosin and methylene blue in EMB Agar?
Eosin and methylene blue help inhibit many Gram-positive bacteria while allowing Gram-negative organisms to grow. They also react with acidic products generated during lactose fermentation, producing characteristic colony appearances.
4. Can EMB Agar identify Escherichia coli?
EMB Agar can support the preliminary differentiation of Escherichia coli, which may produce dark colonies with a characteristic green metallic sheen when lactose is strongly fermented. Definitive identification requires additional confirmatory testing.
5. Is the MP022-50PT plate ready to use?
Yes. The MP022-50PT product is supplied as a prepared, ready-to-use agar plate, reducing the need for in-house preparation, sterilization, and pouring of the culture medium.
