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09136

Millipore

Tryptophan Broth

NutriSelect® Plus, suitable for microbiology

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Synonym(s):
Tryptone/Tryptophan Medium
NACRES:
NA.85

Agency

according to ISO 10273:2017
according to ISO 16654:2001
according to ISO 6579-1:2017

Quality Level

sterility

non-sterile

form

powder

shelf life

limited shelf life, expiry date on the label

composition

casein enzymic hydrolysate, 10.0 g/L
sodium chloride, 5.0 g/L
DL-tryptophan, 1.0 g/L

manufacturer/tradename

NutriSelect® Plus

final pH

7.5±0.2 (25 °C)

application(s)

environmental
food and beverages
water monitoring

microbiology

suitability

Escherichia coli
coliforms

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This Item
1.16122PHL80494AB15570-I
Tryptophan Broth NutriSelect® Plus, suitable for microbiology

Millipore

09136

Tryptophan Broth

N-Malonyl-DL-tryptophan phyproof® Reference Substance

PHL80494

N-Malonyl-DL-tryptophan

form

powder

form

medium granules (dehydrated (DCM))

form

-

form

-

shelf life

limited shelf life, expiry date on the label

shelf life

-

shelf life

-

shelf life

-

application(s)

environmental
food and beverages
water monitoring, microbiology

application(s)

food and beverages, microbiology

application(s)

food and beverages

application(s)

-

suitability

Escherichia coli, coliforms

suitability

Escherichia coli

suitability

-

suitability

-

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

100

Application

Medium to perform the indole test to confirm E. coli in water acc. EN IS0 9308-1:2000.

Preparation Note

Dissolve 16g Tryptophan Broth in one liter water by heating. Dispense 3 ml per test tube. Close the tubes with cotton plugs, plastic or metal caps. Autoclave for 15 min at 121 ± 3°C.

Footnote

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

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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