M0428
Middlebrook 7H11 Agar-Basis
suitable for microbiology, NutriSelect® Plus
Synonym(e):
Media for culturing Mycobacteria
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About This Item
UNSPSC-Code:
41171609
NACRES:
NA.85
Empfohlene Produkte
Sterilität
non-sterile
Qualitätsniveau
Produktlinie
BioChemika
Form
powder
Haltbarkeit
limited shelf life, expiry date on the label
Hersteller/Markenname
NutriSelect® Plus
Lagerbedingungen
protect from light at room temperature
Methode(n)
microbe id | susceptibility testing: suitable
microbiological culture: suitable
pH-Endwert
6.6±0.2 (25 °C)
Anwendung(en)
clinical testing
food and beverages
life science and biopharma
veterinary
microbiology
Eignung
mycobacteria
Verwandte Kategorien
Allgemeine Beschreibung
Middlebrook 7H11 Agar Base media is used for the isolation, cultivation, and sensitivity testing of Mycobacterium species. This agar base contains many inorganic salts which help the growth of Mycobacteria. Citric acid formed from sodium citrate helps in retaining inorganic cations in solution. Glycerol supplies carbon and energy. The Middlebrook OADC Supplement (M0678) contains oleic acid, bovine albumin, sodium chloride, dextrose and catalase. Oleic acid and other long chain fatty acids are essential for the metabolism of Mycobacteria. Dextrose is an energy source. Catalase neutralizes toxic peroxides. Albumin protects tubercle bacilli from toxic agents. Malachite green partially inhibits other bacteria.
Anwendung
There are two types of solid culture media for the primary isolation of Mycobacteria. Egg-based (Lowenstein’s formulation) and agar-based (Middlebrook formulation)
The latter has the following advantages over the egg-based media
The Middlebrook 7H11 agar base does not liquify easily in the presence of contaminating proteolytic organisms
There is less inactivation of added drugs when egg ingredients are absent
The latter has the following advantages over the egg-based media
The Middlebrook 7H11 agar base does not liquify easily in the presence of contaminating proteolytic organisms
There is less inactivation of added drugs when egg ingredients are absent
Komponenten
Zusammensetzung (g/L)
Casein-Hydrolysat, enzymatisch, 1.00
Ammoniumsulfat, 0.50
Kaliumphosphat monobasisch, 1.50
Natriumphosphat dibasisch, 1.50
Natriumcitrat, 0.40
Magnesiumsulfat, 0.05
L-Glutaminsäure, 0.50
Eisenammoniumcitrat, 0.04
Pyridoxin, 0.001
Biotin, 0.0005
Malachitgrün, 0.001
Agar, 15.00
Casein-Hydrolysat, enzymatisch, 1.00
Ammoniumsulfat, 0.50
Kaliumphosphat monobasisch, 1.50
Natriumphosphat dibasisch, 1.50
Natriumcitrat, 0.40
Magnesiumsulfat, 0.05
L-Glutaminsäure, 0.50
Eisenammoniumcitrat, 0.04
Pyridoxin, 0.001
Biotin, 0.0005
Malachitgrün, 0.001
Agar, 15.00
Angaben zur Herstellung
Suspend 10.25 g of Middlebrook 7H11 Agar Base in 450 ml of distilled water. Add 2.5 ml of glycerol (Cat. No. 49767). Boil to dissolve the medium completely. Sterilize by autoclaving at 15 lbs. pressure (121°C) for 15 minutes. Cool to 50°C and aseptically add 1 vial Middlebrook OADC Growth Supplement (M0678). Mix thoroughly before dispensing.
Fußnote
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.
Rechtliche Hinweise
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
Ähnliches Produkt
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 3
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
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