1.11699
Differential reinforced clostridial broth (DRCM)
GranuCult® plus, suitable for microbiology, for Clostridium spp.
Synonim(y):
Clostridium differential broth, DRCM
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About This Item
Kod UNSPSC:
41106213
NACRES:
NA.74
Polecane produkty
agency
DIN Norm 38411
Poziom jakości
sterylność
non-sterile
Postać
granular
opakowanie
pkg of 500 g
producent / nazwa handlowa
GranuCult® plus
warunki przechowywania
dry media (Keep tightly closed)
metody
microbiological culture: suitable
kolor
brown
pH
7.0-7.2 (25 °C, 28 g/L in H2O, after autoclaving)
rozpuszczalność
27.5 g/L
gęstość nasypowa
650 kg/m3
Zastosowanie
food and beverages
microbiology
temp. przechowywania
15-25°C
przydatność
Clostridium spp.
Opis ogólny
Differential Reinforced Clostridial Broth is used to determine the count of sulfite-reducing bacteria by the MPN technique. The redox indicator resazurin is used to monitor anaerobiosis. Clostridia reduce sulfite to sulfide, which causes the culture medium to turn black. As other bacteria can also produce sulfide, vegetative forms must first be removed from the culture by a relevant treatment (e.g., pasteurization), and the anaerobic spore-forming microorganisms must then be identified. The addition of polymyxin (70 IU/ml) to the broth inhibits the growth of most non-spore-forming microorganisms.
Zastosowanie
Differential reinforced clostridial broth is suitable for the enumeration of all clostridia by the MPN method in foodstuffs and other materials.
Cechy i korzyści
- GranuCult® offers superior granulated culture media
- Safe and sustainable due to reduced risks associated with fine dust and toxic substance inhalation, resulting in a safer work environment
- Excellent wettability, solubility, and free-flowing properties
- Convenient, with minimal component separation and clumping, even under warm or humid conditions
- High batch-to-batch reproducibility
- Prolonged shelf life of up to five years
- High number of test strains exceeding all regulatory demands
- Granulation technology allows many supplements to be included, with no need to add these separately
Komentarz do analizy
Appearance (clearness): clear
Appearance (colour): reddish-brown
pH-value (25 °C): 6.9 - 7.3
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): good to very good
Growth (Bacillus cereus ATCC 11778 (WDCM 00001)): fair to good
Growth (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): poor to fair
Growth (Clostridium bifermentans ATCC 19299): good to very good
Growth (Clostridium perfringens ATCC 13124 (WDCM 00007)): good to very good
Growth (Clostridium perfringens ATCC 10543): good to very good
Growth (Clostridium sporogenes ATCC 11437): good to very good
Growth (Clostridium sporogenes ATCC 19404 (WDCM 00008)): good to very good
Blacking (Escherichia coli ATCC 25922 (WDCM 00013)): -
Blacking (Bacillus cereus ATCC 11778 (WDCM 00001)): -
Blacking (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): -
Blacking (Clostridium bifermentans ATCC 19299): +
Blacking (Clostridium perfringens ATCC 13124 (WDCM 00007)): +
Blacking (Clostridium perfringens ATCC 10543): +
Blacking (Clostridium sporogenes ATCC 11437): +
Blacking (Clostridium sporogenes ATCC 19404 (WDCM 00008)): +
Incubation: 7 days; 30 °C; layered with paraffin.
Appearance (colour): reddish-brown
pH-value (25 °C): 6.9 - 7.3
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): good to very good
Growth (Bacillus cereus ATCC 11778 (WDCM 00001)): fair to good
Growth (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): poor to fair
Growth (Clostridium bifermentans ATCC 19299): good to very good
Growth (Clostridium perfringens ATCC 13124 (WDCM 00007)): good to very good
Growth (Clostridium perfringens ATCC 10543): good to very good
Growth (Clostridium sporogenes ATCC 11437): good to very good
Growth (Clostridium sporogenes ATCC 19404 (WDCM 00008)): good to very good
Blacking (Escherichia coli ATCC 25922 (WDCM 00013)): -
Blacking (Bacillus cereus ATCC 11778 (WDCM 00001)): -
Blacking (Pseudomonas aeruginosa ATCC 27853 (WDCM 00025)): -
Blacking (Clostridium bifermentans ATCC 19299): +
Blacking (Clostridium perfringens ATCC 13124 (WDCM 00007)): +
Blacking (Clostridium perfringens ATCC 10543): +
Blacking (Clostridium sporogenes ATCC 11437): +
Blacking (Clostridium sporogenes ATCC 19404 (WDCM 00008)): +
Incubation: 7 days; 30 °C; layered with paraffin.
Przypis
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.
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.
Informacje prawne
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
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