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Lactose [MB-L6281]
Lactose for bacteriological use.
PACKAGE
Description | Quantity | Cat. No |
Lactose | 500g | MB-L6281 |
Lactose | 1kg | MB-L6281-1kg |
Lactose | 5kg | MB-L6281-5kg |
PHYSICO-CHEMICAL CHARACTERISTICS
Standard | |
DCI Name | Lactose |
Ph. Eur. Name | Lactosum |
IUPAC Name | Lactose |
Solubility in water at 5% | Complete |
Humidity | ¡Â 0.10% |
Specific Optical Rotation | + 52.5 |
pH | 4.3 |
Ash | ¡Â 0.05% |
INTERPRETATION
Lactose is used as a source of fermentable carbohydrates for bacteria in fermentation tests (i.e. Escherichia coli ferments lactose whilst Salmonella typhimurium gives a negative reaction). It is not hygroscopic and is free from other sugars and from starch, proteins and metals.
STORE
The powder is very hygroscopic. Store the powder at room temperature, in a dry environment, in its original container tightly closed and use it before the expiry date on the label or until signs of deterioration are evident.
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* This product may have contamination risk during the manufacturing or delivering, so please check before use it.