Table 4. Inactivation of B. subtilis and A. ruber according to irradiation time of UV-C light-emitting diode

Irradiation time (min)	0	5	10	15	20	25	30	35	40
B. subtilis	○1)	○	○	○	○	○	○	×2)	×
Irradiation time (min)	0	30	40	50	60	70	80	90	100
A. ruber	○1)	○	○	○	○	○	○	×2)	×

Growth.
No growth.