무균
non-sterile
Quality Level
양식
powder
유통기한
limited shelf life, expiry date on the label
구성
agar, 15 g/L
bile salt mixture, 1.5 g/L
casein enzymic hydrolysate, 20 g/L
X-glucuronide, 0.075 g/L
제조업체/상표
NutriSelect® Plus
최종 pH
7.2±0.2 (25 °C)
응용 분야
agriculture
bioburden testing
environmental
food and beverages
water monitoring
microbiology
적합성
selective and differential for Escherichia coli
selective and differential for Klebsiella spp.
selective and differential for coliforms
애플리케이션
E. coli ChromoSelect Agar B is recommended for the detection and enumeration of Escherichia coli in foods without further confirmation on membrane filter or by indole reagent. Most of the Escherichia coli strains can be differentiated from other coliforms by the presence of enzyme glucuronidase which is highly specific for Escherichia coli. Escherichia coli cells absorb X-glucuronide and the intracellular glucuronidase splits the bond between the chromophore and the glucuronide. The released chromophore gives the blue coloration of the colonies.
제조 메모
Suspend 36.6 g per litre in distilled water. Sterilize by autoclaving at 121°C for 15 minutes. Cool to 50°C and pour into sterile petri plates.
각주
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.
법적 정보
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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