76721 Millipore

XLT4 Agar (Base)

for microbiology

Synonym: Xylose Lysine Tergitol-4 Agar (Base)



Related Categories All Food Control Media (alphabetical), All Solid Media/Agars, Citrobacter, Clinical Media, Enterobacteriaceae,
grade   for microbiology
shelf life   limited shelf life, expiry date on the label
composition   agar, 18 g/L
  ammonium-iron(III) citrate, 0.8 g/L
  lactose, 7.5 g/L
  L-lysine, 5 g/L
  phenol-red, 0.08 g/L
  proteose peptone No. 3, 1.6 g/L
  sodium chloride, 5 g/L
  sodium thiosulfate, 6.8 g/L
  sucrose, 7.5 g/L
  xylose, 3.75 g/L
  yeast extract, 3 g/L
final pH   7.4±0.2 (25 °C)
Featured Industry   Clinical Testing
Food and Beverages
suitability   selective and differential for Citrobacter
  selective and differential for Enterobacteriaceae
  selective and differential for Escherichia coli and Coliforms
  selective and differential for Salmonella
  selective and differential for Shigella



A selective medium for the isolation and identification of pathogenic Enterobacteriaceae, especially Salmonella spp, according to Miller and Tate (1990).

Preparation Note

4.6 ml/l XLT4 Agar Supplement solution (Cat. No. 83714)

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 natural environment, microbes have adapted to the habitats most suitable ...
Keywords: Culture media, Digestions, Environmental, Filtration, Growth factors, Indicators, Microbiology, Phase transitions, Precipitation, Vitamins

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