supply of colonoscopy unit , supply of colonoscopy unit which includes items as per section iii & iv of nit ( to be considered as single unit ) , supply of colonoscopy unit which includes items as per section iii & iv of nit ( to be considered as single unit ) ( 1 ) hd video-colonoscope, ( 2 ) light source ( preferably led ) , video processor, ( 3 ) insufflation and irrigation units ( 4 ) electro-cautery unit for therapeutic colonoscopic procedures with its trolley ( 5 ) all the accessories like biopsy forceps & snare, cleaning brush etc- 10 each , colonoscopy trolley with wheels , storage shelf for colonoscope , computer software and hardware for image recording & archiving , good quality laser colour printer , computer table , list of accessories , biopsy forceps , snare for polypectomy , cautery snare , forcep for foreign body retrieval