Table 2: Measured anesthetic gas residue, bacteria and fungi in the PACU during working hours

Gas		Before	After	Recommended Exposure Limit
		M	M
Nitrous oxide		21.86ppm	20.47ppm	25ppm
Desflurane		0.25ppm	0.21ppm	2ppm
Bacteria		>1307 CFU/m3	182 CFU/m3	50-150 CFU/m3
Fungi		70.4 CFU/m3	35.8 CFU/m3	50-150 CFU/m3