tender for supply of boiler chemical , chemical for two nos . boiler water treatment for season 2020-2021 on per day basis . i ) ph booster ii ) scale softner / safety agent iii ) oxygen scavanger these chemicals must maintain following parameters:- i ) ph of feed water will 8 . 5 ii ) ph of boiler water will be maintained 9 . 5 to 10 . 50 . iii ) boiler tds will be maintained 1000 ppm . iv ) boiler water sulphur should be 25 to 30 ppm . v ) phosphate should be 15 to 30 ppm . note:- the representative of party will be available in mills for 24 hours in whole crushing season and will do weekly chemical analysis of boiler water with his company testing kit . dosing pump will be provided by the party . rate should be per day basis . empty jar will be returnable basis .