MacConkey Agar No. 2

Item No.  NCM0194A

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Expect availability 01/31/2022
Minimum quantity required: 1
This item must be ordered in multiples of one case. Quantity per case: 1
MacConkey Agar No.2 is a modification of MacConkey Agar which contains bile salts No. 2 for the recognition of Enterococci, and is not intended for use in the diagnosis of disease or other conditions in humans. This agar especially useful when looking for Enterococci in the presence of coliforms and non-lactose fermenters from water, sewage and food products. Enterococci are frequently sought as an index of fecal pollution and appear on this medium as small, intensely colored red-purple colonies. Non-lactose fermenters appear colorless, whilst bile tolerant Gram-positive organisms, such as staphylococci and non-fecal streptococci, are completely inhibited.
Analyte Enterococci
Brand NEOGEN® Culture Media
Formula Liter
Peptone 20.0 g/L
Lactose 10.0 g/L
Bile Salts No. 2 1.5 g/L
Sodium Chloride 5.0 g/L
Neutral Red 0.05 g/L
Crystal Violet 0.001 g/L
Agar 15.0 g/L
Grams per Litre 51.60
Litres per 500g 10.00
Mass 500 g
Package Dimensions 4.60 IN x 2.90 IN x 8.60 IN
Package Weight 1.35 LB
Plates per 500g 530.00
Platform Dehydrated Culture Media
  1. Suspend 51.6 grams of the medium in one liter of purified water.
  2. Heat with frequent agitation and boil for one minute to completely dissolve the medium.
  3. Autoclave at 121°C for 15 minutes
  4. Cool to 45-50°C.
Previous Item Number Product was previously known as LabM Product: LAB216 MacConkey Agar No.2



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