17185
改良 m 肠球菌琼脂
NutriSelect® Plus, powder, selective and differential for Enterococcus spp., pack of 500 g, suitable for microbiology
别名:
改良滤膜肠球菌琼脂
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NACRES:
NA.85
UNSPSC Code:
41171606
Manufacturer/tradename:
NutriSelect® Plus
Form:
powder
Suitability:
selective and differential for Enterococcus spp.
Application(s):
agriculture
environmental
food and beverages
water monitoring, microbiology
environmental
food and beverages
water monitoring, microbiology
sterility
non-sterile
Quality Segment
form
powder
shelf life
limited shelf life, expiry date on the label
composition
agar, 15 g/L , cycloheximide, 0.05 g/L , esculin, 1 g/L , nalidixic acid, 0.25 g/L , pancreatic digest of gelatin, 10 g/L , sodium azide, 0.15 g/L , sodium chloride, 15 g/L , yeast extract, 30 g/L
packaging
pack of 500 g
manufacturer/tradename
NutriSelect® Plus
technique(s)
microbiological culture: suitable
color
greenish yellow
final pH
7.1±0.2 (25 °C)
application(s)
agriculture
environmental
food and beverages
water monitoring, microbiology
suitability
selective and differential for Enterococcus spp.
General description
m-EnterococcusAgar, modified, is a selective dehydrated culture medium formulated for thedetection and enumeration of enterococci, particularly in water analysis. Theformulation contains peptones, yeast extract, esculin, sodium azide, nalidixicacid, cycloheximide, and agar, providing a highly selective environment thatsupports the growth of enterococci while inhibiting a wide range of Gram‑negative bacteria, fungi,and many other competing floras. Pancreatic digest ofgelatin and yeast extract acts as a source of carbon, nitrogen, minerals,vitamins, and other essential nutrients for growth. Sodium chloride maintainsisotonic conditions of the medium, besides the provision of essential ions to avariety of organisms. Sodium azide, Cycloheximide, and Nalidixic acid inhibitmany species of bacteria and fungi and thus make the medium selective. Esculinis hydrolyzed by bacterial enzymes to esculetin and dextrose. TTC is reduced byEnterococci to insoluble formazan inside the bacterial cells, which gives redcoloration to colonies
Application
m-Enterococcus Agar, modified, is a selective medium for the enumeration and detection of enterococci in water and sewage with the membrane-filter technique and in the direct application procedure in food. It is intended for the recovery and enumeration of enterococci from water samples using the membrane filtration technique and is used in conjunction with Esculin Iron Agar for confirmation and identification of typical colonies. It is suitable for monitoring drinking water, recreational water, and other environmental water samples within microbiological water quality testing schemes where enterococci serve as indicators of fecal contamination. The selectivity provided by sodium azide and nalidixic acid allows for reliable recovery of enterococci even in samples with mixed flora, supporting quantitative assessments and regulatory compliance testing in environmental and public health laboratories.
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
将71.4 g悬浮于1升蒸馏水中。煮沸以将培养基完全溶解。在121°C高压灭菌15分钟。冷却至45°C并无菌加入15 ml的无菌1% TTC溶液（货号17779）。充分混匀并倒入至无菌培养皿中。警告：环己酰亚胺毒性很强。避免皮肤接触、气溶胶形成和吸入。
Other Notes
我们现提供两种类型的培养基：GranuCult®优质颗粒状培养基和NutriSelect®高性价比粉末状培养基，满足用户不同层次的需求。
商标后的品级称号basic（基础）、plus（加强）或prime（特级）代表产品的不同质控水平，从基础的质控到标准质控加强版到全面合规的特级质控水平。
商标后的品级称号basic（基础）、plus（加强）或prime（特级）代表产品的不同质控水平，从基础的质控到标准质控加强版到全面合规的特级质控水平。
Legal Information
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
存储类别
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves