supplying, installation and commissioning of new ro plus uv water cooler cum purifier machines -4nos- in the in the old building at carmichael hall, ug and pg, 51, baithakkhana road, kol-09. , supplying, installation & commissioning of eureka forbes/kent or equivalent make ro plus uv water cooler cum purifier machine water storage tank capacity 40ltrs with 20ltrs per hour cooling capacity at comfort level, water outlet temperature at rated condition 15+_1 degree celsius, 1no. tap (normal or cold adjustable), refrigerant hfc r 134a, active copper zinc booster, 4 stages of filter cum purifier, purified water production capacity 25ltrs (under standard condition), stainless steel body & other necessary accessories for indoor installation. , less: buy back of the existing old water purifier machine (old building = 04 nos. and annex building= 03 nos.).