Bacteriological Assessment of the Indoor Air of Different Hospitals of Kathmandu District

Table 6

Evaluation of air quality according to the sanitary standards for nonindustrial premises (CEC, 1993) [13].

S. N	Group of microbes	Range values (Cfu/m^3)	Air pollution degree
1	Bacteria	<50	Very low
2	Bacteria	50–100	Low
3	Bacteria	100–500	Intermediate
4	Bacteria	500–2000	High
5	Bacteria	>2000	Very high