MacConkey Agar

suitable for microbiology, NutriSelect® Basic

EC Number:
MDL number:

Quality Level






NutriSelect® Basic


microbiology: suitable (microbial identification)
water monitoring: suitable

Featured Industry

Food and Beverages


Citrobacter spp.
Escherichia coli
Gardnerella spp.

Related Categories


MacConkey Agar has been used to differentiate members of the coliform group It has also been used to plate serial dilutions of fecal and colonic homogenates of Citrobacter rodentium.


250, 500 g in poly bottle

Biochem/physiol Actions

MacConkey Agar is considered as a selective and differential media. It is useful in differentiating between the lactose fermenting and non-lactose fermenting bacteria. Thus, it is useful in the isolation of gram negative bacteria. Primary plating medium is used to differentiate members of the coliform group.

Preparation Note

Suspend 50 g in 1 litre of distilled water. Bring to the boil to dissolve completely. Sterilize by autoclaving at 121°C for 15 minutes. Pour into sterile petri plates. Dry the surface of the gel before inoculation.

Analysis Note

Microbiologically tested.


We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

Legal Information

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Certificate of Analysis

Certificate of Origin

Source of dietary fiber fed to dogs affects nitrogen and energy metabolism and intestinal microflora populations
Howard MD, et al.
Nutrition Research (New York, N.Y.), 20(10), 1473-1484 (2000)
Influence of processing parameters on microbial load, sensory acceptability, and mineral contents of dehydrated catfish (Clarias gariepinus)
Otolowo DT and Olapade AA
Journal of culinary science & technology, 16(3), 209-223 (2018)
Laboratory Diagnosis of Infectious Diseases: Essentials of Diagnostic Microbiology, 134-134 (2008)
Chinmay V Tikhe et al.
Insect science, 24(1), 93-102 (2015-10-20)
Paratransgenesis targeting the gut protozoa is being developed as an alternative method for the control of the Formosan subterranean termite (FST). This method involves killing the cellulose-digesting gut protozoa using a previously developed antiprotozoal peptide consisting of a target specific...
IL-22 upregulates epithelial claudin-2 to drive diarrhea and enteric pathogen clearance
Tsai PY, et al.
Cell host & microbe, 21(6), 671-681 (2017)

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