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. 2016 Sep 23;13(10):940. doi: 10.3390/ijerph13100940

Figure 2.

Figure 2

On the left, Petri dish showing baseline volunteer contamination after auscultation. The other two plates show the reduction of the contamination after one cycle (5 min) of UVC disinfection obtained by LED 16 (center plate) and LED 18 (plate on the right). Irradiation was performed after 1668 cycles of LEDs functioning.