MHA000P2N

Millipore

Wallerstein Nutrient Broth

pkg of 2 mL, ampoule used to detect bacteria, yeast and mold in worts, beers, and other fermented products

Synonym(s):
WL Nutrient broth, WLN
eCl@ss:
32160801
NACRES:
NA.74

storage conditions

2 to 10 °C

Quality Level

form

liquid

shelf life

12 mo.

feature

ready-to-use

packaging

pkg of 2 mL
pack of 50 tests

application(s)

microbiology: suitable

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
Food and Beverages
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 temp.

2-8°C

suitability

molds
yeasts

Related Categories

Application

WL Nutrient broth is used to detect bacteria, yeast and mold in worts, beers, and other fermentation products. {12}

Packaging

50 pk in 2 mL plastic ampoules
2 mL plastic ampoules

Specifications

Incubation Time: 48–72 hrs
Incubation Temperature: 35 °C ± 2 for bacteria; 30 °C ± 2 for yeasts and molds

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
Target Microorganisms: Lactic acid bacteria, yeast and mold
QC organisms
L. fermentum (ATCC 9338)

S. cerevisiae (ATCC 9763)

Legal Information

MICROFIL is a registered trademark of Merck KGaA, Darmstadt, Germany
MICROPRESURE is a registered trademark of Merck KGaA, Darmstadt, Germany
MILLIFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Paper read at American Society of Brewing Chemists Meeting
Green SR and Gray PP
Wallerstein Laboratories Communications, 12, 353-353 (1950)
Media for Isolation-Identification-Cultivation-Maintenance of Medical Bacteria
MacFaddin JF
Williams and Wilkins, 12, 353-353 (1985)

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