MacConkey Broth
MacConkey Broth – Full Product Description
MacConkey Broth is a high-quality selective liquid culture medium widely used for the detection and enumeration of coliform bacteria, particularly Escherichia coli. It is commonly applied in water testing, food and dairy analysis, and clinical microbiology laboratories.
This broth contains bile salts and crystal violet, which inhibit the growth of gram-positive organisms, allowing selective growth of gram-negative enteric bacteria. The presence of lactose enables differentiation based on lactose fermentation. Fermentation of lactose results in acid and gas production, providing a clear indication of coliform presence.
MacConkey Broth is especially suitable for use in MPN (Most Probable Number) tests, making it an essential medium for routine quality control and microbiological analysis.
Key Features & Benefits : MacConkey Broth
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Selective medium for coliform bacteria detection
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Inhibits gram-positive bacterial growth
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Supports lactose fermentation with visible gas formation
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Reliable and consistent test results
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Suitable for routine laboratory and quality control use
Applications
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Microbiological testing of drinking water and wastewater
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Food and dairy product quality testing
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Clinical microbiology laboratories
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Environmental monitoring
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MPN (Most Probable Number) analysis
Typical Composition
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Peptone
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Lactose
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Bile Salts
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Sodium Chloride
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Neutral Red Indicator
(Exact formulation may vary by manufacturer)
Storage & Handling
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Store in a cool, dry place
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Protect from moisture and direct sunlight
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For laboratory use only
Why Buy from Bright Scientific?
BrightScientific supplies reliable, high-quality microbiology media designed to meet laboratory testing standards. Our products ensure accuracy, consistency, and dependable performance for research, educational, and industrial laboratories.
| Ingredients | Gms / Litre |
| Gelatin peptone# | 20.000 |
| Lactose monohydrate | 10.000 |
| Dehydrated bile## | 5.000 |
| Bromo cresol purple | 0.010 |
| pH after sterilization ( at 25°C) | 7.3±0.2 |
**Formula adjusted, standardized to suit performance parameters
