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Alpha Vogel & Johnson Agar - 500 g

Alpha Vogel & Johnson Agar - 500 g

# V22-103-500 g
Package size: 500 g
Brand: Alpha
Alpha Vogel & Johnson Agar - 500 g

DKK 2.143,00

Not in stock, delivery 1-2 weeks

Description

Vogel & Johnson Agar is a selective agar medium used for the detection of Staphylococcus aureus and other coagulase-positive, mannitol-fermenting Staphylococci in clinical specimens and food sources.

Tryptein and Yeast Extract provide the essential nutrients for bacterial growth. D-Mannitol is the main carbohydrate source. The presence of Tellurite, Lithium Chloride and high concentration of Glycine make the medium selective.

Coagulase-positive Staphylococci ferment D-Mannitol, thus acidifying the medium and causing the color shift of the pH indicator Phenol Red from red to yellow, and reduce Tellurite, thus forming a black precipitate in the center of the colony. Therefore, resistant colonies form black colonies surrounded by a yellow zone on this medium.

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