Weiyel Reference Materials
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| Subculture | Nutritional gravy medium (English name: NA/NB): beef paste 3.0g, peptone 10.0g,NaCl 5.0g, agar 20.0g (not included in liquid medium), distilled water 1.0L,pH 7.0. Sterilization at 121 ℃ for 15min. [Note] Adding 5 mgMnSO4 · H2O to culture Bacillus is beneficial to produce spores. |
| Subculturing | When using the essential control product, it should be moved to room temperature (20~25 ℃) for 10 minutes, the concentration value is 10 6~10 7PFU/mL, and the reference concentration is 9.33 × 10 6PFU/mL |
| Storage conditions | -20 ℃ |
| Safety level | 1 |
| Application | The Escherichia coli phage PhiX174 quantitative standard quality control products, and collected phages by culturing host bacteria of Escherichia coli and phage PhiX174. The phage titer and lysis efficiency were determined by double-layer agar counting method, which was mainly used for phage PhiX174 positive quality control. |
| Sharing mode | Public welfare sharing |
Standard quality control sample of total coliform bacteria in drinking water (multi-tube fermentation method)
BNCC360412
Bacillus stearothermophilus spore suspension
BNCC360469
Campylobacter jejuni subsp nucleic acid detection standard
BNCC362621
Standard quality control samples of Escherichia coli in drinking water (multi-tube fermentation method)
BNCC360415
Serwater fecal coliform positive control quality control sample (Multi-tube fermentation method)
BNCC363179
Quality control sample of total number of feed colonies
BNCC361567