Table 1: Tested concentrations of chosen disinfecting agents.

DisinfectantCharacteristicRange of tested concentrations Tested concentrations Concentrations identified as promoting biofilm development (%)

Chloramine T (g/mL) Chlorine-releasing agent (CRA)312–5000312; 625; 1250; 2500; 5000Isolates:
1 (B+++): 2500
2 (B++): 2500
3 (B+): 2500
Ethanol (%; v/v)Alcohol0.315–200.315; 0.63; 1.25; 5; 8; 10; 15; 20Isolates:
1 (B+++): 0.63; 1.25; 2.5; 5
2 (B++): 0.63; 1.25; 2.5; 5
3 (B+): 1.25