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 | Before use, take it out from -20 ℃ and balance it at room temperature for 10 minutes, and accurately weigh (1.09±0.01)g(20 ℃) of sterile distilled water to re-dissolve the freeze-dried standard substance with a balance. |
| Growth conditions | 37 ℃, aerobic, 18-24h |
| Storage conditions | -20 ℃, kept away from light |
| Safety level | 1 |
| Application | Bacillus atrophy spore counting standard material is mainly used for the evaluation of biological safety cabinet personnel, products and cross-contamination protection performance. It can also be used for the evaluation of the collection efficiency of air microbial samplers and plankton bacteria samplers and the evaluation of disinfection and sterilization effects, which is the reliability of the evaluation results Provide measurement traceability guarantee. |
| Sharing mode | Public welfare sharing |
Shigella quality control sample of sludge from medical institutions
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Escherichia coli bacteriophage PhiX174 standard quality control product
BNCC362981
BNCC362179
Standard quality control sample of total coliform bacteria in drinking water (multi-tube fermentation method)
BNCC360412
Escherichia coli EHEC O157:H7-sfgfp green fluorescent marker strain
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Water quality fecal coliform negative quality control sample (Membrane membrane method)
BNCC360397