Formaldehyde gas sterilization is employed for?
Sterilizing hea lung machines
Glass materials
Paper and cloth
Fumigation of operation theater
Formaldehyde gas is used for sterilising instruments and heat sensitive catheters and for fumigating wards and sick rooms and laboratories REF:Ananthanarayan and Panicker's Textbook ofMicrobiology 8thEdition pg no:36
general microbiology