Table 3. Characteristics of Hg lamps.^a.

Specimen	Lamp Model	Arc Length (mm)	Electrical Power (W)	UV-C Output Power at 254 nm (W)	WPE
Lamp 1	GPH436T5L4PSE	360	48	13	0.27
Lamp 2	GHO36T5L4PSE	755	87	28	0.32
Lamp 3	GPH893T5L4PSE	815	95	30	0.32
Lamp 4	GHO64T5L4PSE	1421	155	54	0.35

^a Values obtained from catalogs available on the market provided by manufacturers [41, 42].