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MHA000P2N Millipore

Wallerstein Nutrient Broth (WLN)

Used to detect bacteria, yeast and mold in worts, beers, and other fermentation products

  •  eCl@ss 32160801

  •  NACRES NA.74



Related Categories All Liquid Media/Broths, Microbiological Culture Media, Microbiology, Ready Media - in bottles, tubes, ampoules & Petrifilms
Quality Level   100
form   liquid
shelf life   12 mo.
packaging   pkg of 2 mL
  pack of 50 tests
color   slightly opalescent green-blue
input   sample type beer
sample type food(s)
sample type beverage(s)
sample type beverage(s)
sample type cosmetics
sample type bottled water
sample type wine
sample type soft drink
sample type cider
sample type sport drink
pH   5.5±0.2 (25.0 °C)
Featured Industry   Environmental
Industrial QC
compatibility   for use with MF-method
  for use with Microfil®
  for use with MicropreSure®
  for use with Milliflex®
shipped in   wet ice
storage conditions   2 to 10 °C



50 pk in 2 mL plastic ampoules


Type of Test
Food and Beverage


2 mL plastic ampoules


Incubation Temperature: 35 °C ± 2 for bacteria; 30 °C ± 2 for yeasts and molds

Incubation Time: 48–72 hrs

Culture Medium

Wallerstein (WLD)

Analysis Note

Bacterial colonies can appear non-pigmented to white, with a smooth or rough texture. Yeast appear as creamy, white larger colonies

QC organisms
L. fermentum (ATCC 9338)

S. cerevisiae (ATCC 9763)

Target Microorganisms: Lactic acid bacteria, yeast and mold

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
Protocols & Articles


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Ready-to-use Culture Media for Beverages and Water Testing

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