All Germs
Germs

Bacillus subtilis

UV doses per log reduction

1530456110.11D90 · 90 %20.22D99 · 99 %30.33D99.940.44DVGW 4-log50.5599.999 %60.6699.9999 %mJ/cm²LOG-REDUKTIONS-STUFE

Medium & classification

Water
Bacterial spores
Test wavelength 254 nm

UV resistance

Moderate

40.4 mJ/cm² are needed for 4-log reduction — classification for system sizing.