Fig. 6

Effects of flow stoppage time and presence of metal corrosion on the sterility of the terminal dialysate after cleaning and disinfection. Dialysate spiked with P. aeruginosa (10 CFU/mL) was introduced into the experimental circuit (Fig. 1), and the circuit flow was stopped for the indicated periods. Then, after cleaning and disinfection (Fig. 4), the terminal dialysates were sampled, and the live bacterial counts in the samples were measured. The minimum detection sensitivity is 0.05 CFU/mL. ● indicates not detected; ○ indicates detected; and the dashed lines indicate mean value