Weiyel Reference Materials
info@weiyel.com
| 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, dissolved with 1mL of sterile water or sterile physiological saline, with a minimum sampling amount of 200uL, a concentration value of 108 ~ 109PFU/mL, and a reference concentration of 1.3 × 108PFU/mL. |
| Storage conditions | -20 ℃ |
| Safety level | 1 |
| Application | The E. coli phage T7 quantitative standard quality control, through the cultivation of E. coli host bacteria and phage T7, the collection of phage. The phage titer and lysis efficiency were determined by double-layer agar counting method, which was mainly used for phage T7 positive quality control. |
| Sharing mode | Public welfare sharing |
Reference material of total bacterial count in food
BNCC362999
Reference material of total bacterial count in food
BNCC359091
Candida albicans nucleic acid reference (Heat inactivated) (Strongly positive)
BNCC362018
Escherichia coli bacteriophage T1 standard quality control product
BNCC362949
Bacillus subtilis spore suspension
BNCC361464
Seawater total bacterial colony count quality control sample
BNCC363183