UV exposure (dose) 10 ppm 100 ppm 500 ppm 1000 ppm
UV-A (1.4mW/cm2) 5.6 5.9 6.4 7.2
UV-B (0.4mW/cm2) No 4.4 4.6 5.0
Dark No No No No
Table 7: Inhibition zone at different concentration of Benzanthrone on exposing to UV-A, UV-B and sunlight.