supply and delivery of spare parts and chemicals for repairing and renovation of wtp unit of r.o. based fully automatic drinking water bottling plant at dariapur wtp complex in the district of malda, under malda mechanical division p.h.e .dte.-2 filter media 3 gravels ( 40 kg / bag ) 4 filtering sand ( 40 kg / bag ) 5 treated sand ( 40 kg / bag ) 6 activated carbon 7 anthracite 8 cartridge filter 9 5 micron 20 long ( jumbo wound type ) 10 6 micron 20 long ( slim wound type ) 11 0.1 micron 20 long ( spun cartridge ) 12 0.2 micron 20 long ( pleated cartridge ) 13 supply, delivery of membrane element for ro unit, suitable forinstallation in ro vessel diameter as per following specification:-a ) permeate flow: - minimum 10000 gpdb ) configuration : - spiral woundc ) membrane polymer:- composite polyamided ) nominal membrane area:- minimum 365 ft2 ( 33.9m2 ) e ) maximum applied pressure:- above 450 psif ) maximum operation temperature :- not above 122°f ( 50°c ) g ) ph range, continuous ( cleaning ) :- 2-11 ( 1-13 ) *h ) maximum feed water turbidity :- upto 1.0 ntui ) maximum feed water sdi ( 15 mins ) :- upto 5.0j ) maximum feed flow:- 75 gpm ( 17.0 m3 / h ) k ) minimum ratio of concentrate to permeate flow any element:- 5.1l ) maximum pressure drop for each element:-10 psi 14 spare parts 15 dosing pump 16 1 / 4 pestro fittings 17 1 / 4 pestro pipes 18 lateral distribution systems 19 silicon gasket 20 1.5 ( small ) 21 1.5 22 2.5 23 2 multiport valve 24 ozone cell for 500 / 1000 ml plant 25 6 mm dozing pipe ( teflon ) 26 chemicals 27 ro antiscalant flowmax-2222 28 sodium hypochlorite 29 making arrangement for deploying service engineer with all incidental charges for replacement of all the supplied spare parts and chemical as in sl. no. 1.00 to 6.00 and commissioing of the water tretment area all complete as per direction of eic. 30 make as per departmental approved vendor list circulated vide memo no.phe / iv / 2277 / w-181 / 19 dated- 25 / 09 / 2019 31 add gst @18% 32 add cess @1%