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Soaking method disinfection effect.
| Sampling time | 75% Ethanol | 0.5% Benzalkonium Chloride | Chlorine-containing disinfectant | |||
|---|---|---|---|---|---|---|
| Colony count(cfu/cm2) | PA | Colony count(cfu/cm2) | PA | Colony count(cfu/cm2) | PA* | |
| Before disinfection | >100 | + | >100 | + | >100 | + |
| 1 min after disinfection | < 0.1 | – | 5 | − | < 0.1 | - |
| 24 h after disinfection | 10 | − | >100 | + | 5 | - |
*: + Positive for PA, − Negative for PA.
