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Merck
CN

1.01295

Coliforms 50

ReadyCult®, granular, sterile; γ-irradiated, for coliforms, pkg of 20 Tests

Synonym(s):

Bacterial monitoring, Pathogen detection

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About This Item

NACRES:
NA.74
UNSPSC Code:
41106212
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Product Name

Coliforms 50, ReadyCult®, granular, sterile; γ-irradiated, for coliforms, pkg of 20 Tests

sterility

sterile; γ-irradiated

form

granular

manufacturer/tradename

ReadyCult®

packaging

pkg of 20 Tests

technique(s)

microbiological culture: suitable

Quality Level

color

yellowish

pH

6.6-7.0 (25 °C, 17 g/L in H2O)

solubility

17 g/L

application(s)

food and beverages
microbiology

storage temp.

15-25°C

suitability

Escherichia coli
coliforms

Analysis Note

Appearance
- clearness:
clear
- colour: yellowish
pH-value (25 °C): 6.6 - 7.0
Inoculum on reference medium
- Escherichia coli ATCC 11775 (WDCM 00090):
10 - 100
- Citrobacter freundii ATCC 8090: 10 - 100
- Klebsiella pneumoniae ATCC 31488: 10 - 100
- Salmonella typhimurium ATCC 14028 (WDCM 00031): 10 - 100
- Pseudomonas aeruginosa ATCC 10145 (WDCM 00024): ≥ 1000
Growth
- Escherichia coli ATCC 11775 (WDCM 00090):
+
- Citrobacter freundii ATCC 8090: +
- Klebsiella pneumoniae ATCC 31488: +
- Salmonella typhimurium ATCC 14028 (WDCM 00031): +
colour change to blue-green
- Escherichia coli ATCC 11775 (WDCM 00090):
+
- Citrobacter freundii ATCC 8090: +
- Klebsiella pneumoniae ATCC 31488: +
- Salmonella typhimurium ATCC 14028 (WDCM 00031): -
- Pseudomonas aeruginosa ATCC 10145 (WDCM 00024): -
Fluorescence
- Escherichia coli ATCC 11775 (WDCM 00090):
+
- Citrobacter freundii ATCC 8090: -
- Klebsiella pneumoniae ATCC 31488: -
- Salmonella typhimurium ATCC 14028 (WDCM 00031): -
- Pseudomonas aeruginosa ATCC 10145 (WDCM 00024): -
Indole formation
- Escherichia coli ATCC 11775 (WDCM 00090):
+
- Citrobacter freundii ATCC 8090: -
- Klebsiella pneumoniae ATCC 31488: -
- Salmonella typhimurium ATCC 14028 (WDCM 00031): -
Incubation: 24 hrs.; 35 °C; aerobic.

Legal Information

READYCULT is a registered trademark of Merck KGaA, Darmstadt, Germany

Application

Coliforms 50 is used for the detection of coliforms and E. coli in water and beverage samples, as well as for microbiological culture testing for environmental and industrial monitoring.

General description

Coliforms 50 is a granular, sterile, and ɣ-irradiated microbiological culture medium designed for the detection of coliforms and Escherichia coli in 50 ml water samples.

Storage Class

11 - Combustible Solids

wgk

WGK 2

Regulatory Information

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Articles

Selective media enable faster results and visual confirmation for the detection, identification, and enumeration of microorganisms

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