17349
Lauryl sulfate Broth
NutriSelect® Plus, powder, selective for coliforms, pack of 500 g, suitable for microbiology
Synonym(s):
Lauryl Tryptose Broth
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About This Item
NACRES:
NA.74
UNSPSC Code:
41171607
Manufacturer/tradename:
NutriSelect® Plus
Agency:
according to ISO 4831:2006, according to ISO 7251:2005
Form:
powder
Suitability:
selective for Enterobacter spp., selective for Escherichia coli, selective for Salmonella spp., selective for coliforms
Application(s):
agriculture
bioburden testing
environmental
food and beverages
water monitoring, microbiology
bioburden testing
environmental
food and beverages
water monitoring, microbiology
Quality Segment
agency
according to ISO 4831:2006, according to ISO 7251:2005
sterility
non-sterile
form
powder
shelf life
limited shelf life, expiry date on the label
composition
dipotassium hydrogen phosphate, 2.75 g/L , lactose, 5 g/L , potassium dihydrogen phosphate, 2.75 g/L , sodium chloride, 5 g/L , sodium lauryl sulfate, 0.1 g/L , tryptose, 20 g/L
packaging
pack of 500 g
manufacturer/tradename
NutriSelect® Plus
technique(s)
microbiological culture: suitable
final pH
6.8±0.2 (25 °C)
application(s)
agriculture
bioburden testing
environmental
food and beverages
water monitoring, microbiology
suitability
selective for Enterobacter spp., selective for Escherichia coli, selective for Salmonella spp., selective for coliforms
General description
Lauryl Sulfate Broth, developed by Mallmann and Darby in 1941, is aselective medium used for the presumptive testing and selective enrichment ofcoliform bacteria in water, dairy products, and foodstuffs. The medium isformulated with tryptose instead of casein, providing essential nitrogen,carbon compounds, vitamins, and amino acids for bacterial growth. Lactoseserves as fermentable sugar, while sodium lauryl sulfate and bile salts inhibitnon-coliform organisms, including gram-positive bacteria such as bacilli andfecal Streptococci. Sodium chloride maintains osmotic balance, and potassiumphosphates stabilize the pH during lactose fermentation.
Application
Lauryl Sulfate Broth is primarily used for detecting coliform bacteria,including Escherichia coli, in environmental samples and food products.The medium inhibits non-coliform organisms through sodium lauryl sulfate andbile salts, while lactose fermentation with gas production serves as apresumptive indicator of coliform presence.
Features and Benefits
Features:
- High-Quality Standards: NutriSelect® Plus powdered culture media are made from carefully selected raw materials, ensuring consistent quality.
- Wide Range of Applications: Suitable for various microbiological needs, including academic research, food and beverage testing, and pharmaceutical applications.
- Regulatory Compliance: Products meet industry standards and are compliant with ISO 9001 quality assurance.
- Innovative Formulations: Includes novel media types such as non-animal-derived alternatives, synthetically defined media, and chromogenic media.
- Convenience and Safety: Easy-to-use powdered format with minimal clumping and excellent solubility, even in warm or humid conditions.
- Sustainability: Reduced risks associated with fine dust and toxic substance inhalation, ensuring a safer work environment. ·
- Extended Shelf Life: Products have a prolonged shelf life of up to five years.
- High Reproducibility: Ensures consistent results across batches, exceeding regulatory demands.
- Comprehensive Portfolio: A vast selection of over 350 products tailored to meet diverse microbiological testing needs.
Preparation Note
Dissolve 35.6 g in 1 litre water. Sterilize by autoclaving at 121°C for 15 minutes.
Other Notes
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.
Legal Information
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
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Storage Class
11 - Combustible Solids
WGK
WGK 2
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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