BACGro MacConkey Agar / 500g

BACGroTM MacConkey Agar, when prepared as directed, is used as a selective media for Gram-negative bacteria and further differentiates between lactose and non-lactose fermenters. It is not intended for use in diagnosis, treatment, or prevention of disease in humans. BACGroTM MacConkey Agar conforms to harmonized USP/EP/JP requirements.

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The formulation of BACGroTM MacConkey Agar includes multiple peptones for nutrient sources. A combination of crystal violet and bile salts inhibits the growth of Gram-positive organisms, particularly Enterococci and Staphylococci species. Lactose-fermenters will utilize the provided lactose to trigger a color change resulting in pink/red colonies due to neutral red. Non-lactose fermenters will appear beige/colorless.

MacConkey Agar conforms to the Harmonized United States Pharmacopeia (USP), European Pharmacopeia (EP) and Japanese Pharmacopeia (JP) Standards.

Kit Specifications
Formulation (per Liter)

Gelatin Peptone 17.0 g

Casein Peptone 1.5 g

Peptic Digest of Animal Tissue 1.5 g

Lactose 10.0 g

Bile Salts 1.5 g

Sodium Chloride 5.0 g

Neutral Red 0.03 g

Crystal Violet 0.001 g

Agar 13.5 g

Total 50.0 g/L

2-30 °C
Coliform & E.Coli, Proteus, Salmonella
Product Attachments
  • Instruction for Use - MacConkey Agar

Find product documentation under Document Repository