Viable count of Bacillus subtilis spore suspension and vegetative organisms after exposure to 10% neutral buffered formalin and UMFix
| Organism | Time of exposure | Initial CFU/ml | 10% formalin CFU/ml | UMFix CFU/ml |
|---|---|---|---|---|
| CFU, colony forming units; ND, not determined. | ||||
| Spores | ||||
| 0 | 4.6×107 | |||
| 20 min | ND | 2.3×107 | 2.5×107 | |
| 24 hour | 3.3×107 | 0 | 2.4×107 | |
| Vegetative | ||||
| 0 | 5.4×107 | |||
| 20 min | ND | 0 | 0 | |
| 24 hour | 4.8×107 | 0 | 0 | |