Mac Conkey n°3 (Gélose)
Use
insulation of the Gram bacilli -
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
Preparation
51,5 G by litreSterilisation with the autoclave.
Reading
- red colonies: lactose +
- yellow or colorless colonies: lactose -
- Only the Gram bacilli - cultivate on this medium because of biliary salts n°3 more inhibiting than the n°2 and which make it possible to eliminate Enterococcus.
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