Table 1.
Surface bioburden before 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 | 2.50 (n=10) |
3.14 | 2.30 (n=10) |
1.88 | 5.90 (n=10) |
3.14 | 4.11 (n=9) |
4.62 |
| Contact plate | 0.76 (n=30) |
1.01 | 1.17 (n=30) |
1.60 | 0.57 (n=30) |
1.07 | 1.30 (n=30) |
1.47 |
| Recovery (%) | 30.4 | – | 50.9 | – | 9.7 | * | – | |
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.