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 biosafety 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 planksome 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 |
Seawater quality fecal coliform positive quality control sample (Membrane membrane method)
BNCC363181
Helicobacter pylori reference (Chemically inactivated) (Strongly positive)
BNCC363672
Standard quality control sample of fecal coliform (MPN counting method)
BNCC360589
Quality control sample of total number of feed colonies
BNCC361567
Shigella quality control sample of sludge from medical institutions
BNCC362177
Reference material of escherichia coli in milk powder
BNCC360265