Mac Conkey n°2 (Gélose)

Use

insulation of the gram - and Enterococcus

Composition

  • peptone 20,0 G
  • Lactose 10,0 G
  • salt biliary n°2 1,5 G
  • purple Crystal 0,001 G
  • Red neutral 0,05 G
  • Sodium chloride 5,0 G
  • Agar 15,0 G
  • pH = 7,4

Preparation

51,5 G per liter of water distilleeSterilisation to the autoclave.

Reading

  • red colonies: lactose +
  • yellow or colorless colonies: lactose -
  • colonies of Gram bacilli - are relatively large while that of Enterococcus have approximately 1 mm diameter.

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