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78419 Sigma-Aldrich

Salmonella ChromoSelect Agar

for microbiology

Synonym: Salmonella Agar ChromoSelect



Related Categories A - M, All Food Control Media (alphabetical), All Solid Media/Agars, Chromogenic Media, Media,
grade   for microbiology
shelf life   limited shelf life, expiry date on the label
composition   agar, 13 g/L
  bile salt mixture, 1 g/L
  chromogenic mixture, 5.4 g/L
  peptic digest of animal tissue, 6 g/L
  yeast extract, 2.5 g/L
pH   7.7±0.2 (25 °C)
suitability   selective and differential for Salmonella
  selective and differential for Shigella



Salmonella ChromoSelect Agar is a selective medium used for simultaneous detection of Escherichia coli and Salmonella from food and water. Escherichia coli and Salmonella are easily distinguishable due to the colony characteristics. Salmonella give light purple colonies a halo. Escherichia coli has a characteristic blue color, other organisms give colorless colonies. The characteristic light purple and blue color is due to the chromogenic mixture.


Suspend 27.9 g in 1 litre distilled water. Boil gently to dissolve the medium completely. DO NOT AUTOCLAVE. Cool to 50°C. Mix well and pour into sterile petri plates.

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Protocols & Articles


Differentiation and Identification Media for Salmonella

Salmonella contamination is the second leading cause of food-borne illness worldwide. Controlling outbreaks of Salmonella is an important task for food regulators, restaurants and the food industry i...
Jvo Siegrist
Microbiology Focus Edition 1.3
Keywords: Biochemistry, Fermentation, Food & Beverage, Indicators, Microbiology

Microbiology Introduction

An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man. Re...
Keywords: Absorption, Aerobic, Anaerobic, Antibiotics, Antimicrobials, Buffers, Culture media, Diffusion, Environmental, Filtration, Genetic, Growth factors, Metabolism, Phase transitions, Precipitation, Reductions, Respiration, Sample preparations, Vitamins

Microbiology Theory: Media Preparation

Microorganisms need nutrients, a source of energy and certain environmental conditions in order to grow and reproduce. In the environment, microbes have adapted to the habitats most suitable for thei...
Keywords: Culture media, Digestions, Environmental, Filtration, Growth factors, Indicators, Microbiology, Phase transitions, Precipitation, Vitamins

Overview of Chromogenic Media

The use of traditional versus improved media formulation containing chromogenic substrate is currently an important topic in the field of microbiology. The focus behind such developments was to produ...
Jvo SiegristProduct Manager
AnalytiX Issue 3
Keywords: Culture media, Diffusion, Electron capture detector, Fermentation, Filtration, Metabolites, Microbiology

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