Table 2.
Surface bioburden after disinfection expressed as mean cfu per ampoule or vial
| Plastic ampoules | Glass ampoules | Injection vials | Infusion vials | |||||
| Mean cfu | SD | Mean cfu | SD | Mean cfu | SD | Mean cfu | SD | |
| Total immersion | 1.60 (n=10) |
2.91 | 0.70 (n=10) |
0.95 | 6.20 (n=10) |
6.44 | 8.80 (n=10) |
11.35 |
| Contact plate | 0.03 (n=40) |
0.16 | 0.20 (n=30) |
0.41 | 0.13 (n=30) |
0.43 | 0.07 (n=29) |
0.26 |
| Recovery (%) | 1.9 | – | 28.6 | – | 2.1 | – | * | – |
Recovery is the number of cfu found on contact plate as a percentage of the number at total immersion.
*Recovery is not determined because of the small part of the surface which is monitored by a contact plate (see methods).
n, number of samples examined.