Sanitation (continued)
Table 1. Limits for microbial contamination (information only)
Grade | Air sample (CFU/m3) | Settle plates (90mm diameter) (CFU/4 hours) | Contact plates (55mm diameter) (CFU/plate) | Glove print (5 fingers) (CFU/glove) |
A | < 3 | < 3 | < 3 | < 3 |
B | 10 | 5 | 5 | 5 |
C | 100 | 50 | 25 | - |
D | 200 | 100 | 50 | - |
The manufacturer should have alert and action limits, and should monitor the trends of results of air quality.
The table gives some guidance of limits of microbial contamination when samples are taken.
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