Table 2.

Duodenoscope Contamination Model Characteristics

Principal Component	Substratum	Advantage	Disadvantage	References
Pegs	PTFE	Easy application	No flow	da Costa Luciano et al 11 da Costa Luciano et al 12
Tubes	PTFE	Flow	No direct observation	Alfa et al 13 Alfa et al 14
Flow chamber	FEP	Flow direct observation inside lumen	Adhesion might be influenced because of different chemical composition	Bakker et al 15 Kaper et al 16

Note. PTFE, polytetrafluoroethylene; FEP, fluorinated ethylene propylene.