How to caculate UVC dosage

It is useful to determine the UVC dosage of the UVC lamp used to disinfect surfaces.

To accurately measure the UVC, a UVC tester will need to display the intensity reading measured in microwatts per cm2. The UVC tester will need to place at the same distance away from the UVC source with the products that are to be sanitize.

UVC Dose = UVC intensity (microW/cm2) X Exposure Time (seconds)

Exposure time is the time taken when the UVC lamp is ON and delivering the UVC on the surface. Start measure 20 to 30 seconds later as UVC lamp may need to warm up.

The Dosage of UVC required to provide effective protection against micro-organisms as soon below:

Organism	Alternate name	Type	Disease	Dosage microWSec/cm2
Corynebacterium diphtheriae	C. diphtheriae	Bacteria	Diptheria	6,500
Legionella pneumophila	L. pneumophila	Bacteria	Legionnaire’s	12,300
Mycobacterium tuberculosis	M. tuberculosis	Bacteria	Tuberculosis TB	10,000
Pseudomonas aeruginosa	P.aeruginosa	Bacteria		3,900
Staphlylococcus aureus	S. aureus	Bacteria		6,600
Adeno Virus Type III		Virus		4,500
Influenza		Virus	Flu	6,600