Start analysis

Color after 12 h

Color after 19 h

Color after 24 h

Bacterial concentration (CFU/mL)

Red

Yellow

Yellow

Yellow

>103 = High

Red

Red

Yellow

Yellow

10 < x < 103 = Medium

Red

Red

Red

Yellow

1 < x < 10 = low

Red

Red

Red

Red

<1 = No contamination