Fig 1.

Differences in the TTDs with and without antimicrobial substances: (a) BacT/Alert FA Plus (aerobic) bottle; (b) BacT/Alert FN Plus (anaerobic) bottle. Arithmetic means of triplicates were used for the graphic illustration. Each column illustrates the difference in the TTD between bottles containing antimicrobial substances and controls. Consecutive columns along the x axis show the change in TTD (ΔTTD) related to decreasing concentrations of the antimicrobial substances. The ΔTTD for bottles that remained negative due to insufficient antimicrobial neutralization after 3 days was set as 72 h.