The World Health Organisation (WHO) named the Air Force Command Hospital, Bangalore, as their model hospital in 1999. Their hospital waste management (HWM) is an integrated approach consisting essentially of hydroclaving and incineration. An autoclave and microwave is used in disinfection of certain specific instruments and wastes from laboratory and surgery. Wastes are segregated and colour-coded. Green buckets are for domestic wastes, red ones for soiled wet wastes, blue ones for plastic wastes and yellow for human body parts.