BNCC
Quantitative Strain of Escherichia coli
SKU 354945
Bioware
A standardized microbiological quality-control material designed to provide a defined analytical challenge.
Suitable for method verification, recovery studies, detection or enumeration performance assessment, and routine quality control.
Technical Specifications
| Organism | Quantitative strains of escherichia coli (Migula) Castellani and Chalmers |
|---|---|
| Material Type | Microbiological Quality Control |
| Preservation Form | Lyophilized tablets |
| Morphological Characteristics | Colony diameter 1-2mm, circular, with neat edges, opaque, grayish-white upper surface, raised center, smooth surface, glossy appearance, moist texture, easily lifted, G− (red), bacillus |
| Culture Method | ① Cultivate bacteria into suspension according to culture conditions; ② Measure suspension absorbance and calculate initial concentration using standard formula; ③ Multiply initial concentration by survival rate to obtain actual lyophilized concentration;④ Dilute the bacterial suspension to target concentration based on the actual post-lyophilization concentration, then aliquot and freeze-dry |
| Culture Conditions | 37°C; 18-24h; Aerobic |
| Provided Formats | Vial |
| Culture Medium No. | 352239 |
| Culture Medium Name | Nutrient Agar |
| Culture Medium Composition | Peptone:10.0g, Beef Extract Powder:3.0g, NaCl:5.0g, Agar:15.0g, pH:7.3±0.1(25°C) |
| Pack Configuration | Single Vial |
|---|
| Application | Microbiological method verification, enumeration, and laboratory quality control. |
|---|---|
| Storage Conditions | -20°C |
| Country of Origin | China |
Documents
The Certificate of Analysis (COA) is issued for the applicable batch or lot and is available upon request.