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Tender For supply of chemical for water supply installation of naa under ge(n) tezpur - supply only calcium hypochlorite granular form with chlorine content 65% to 70% in sealed packing for pre chlorination and post chlorination for dosing/filling in drinking water as per following generic specification complete all as specified and as directed.(i) available chlorine min - 65% by mass(ii) partical size (passing through 1.70mm is sieve) min - 99% by mass (iii) water insoluble matter max - 6%(iv) calcium hydroxide max - 4%(v) sodium chloride max - 15%(vi) loss of chloride on basis of available chloride max - 1/15, supply only of non ferric alum grade-i in sealed packing commercial for dosing/filling drinking water as per standard parameters as specified and rate of dosing as per standard parameters complete all as specified and as directed., supply only of soda ash powder in sealed packing for dosing/filling drinking water as per standard parameters as specified and rate of dosing as per standard parameters conforming complete all as specified and as directed., supply only of poly aluminium chloride (pac) inorganic soluble polymer raw water flocculants powder in sealed packing bags conforming to the following specifications:-(a) bulk density/specific gravity at 20 degree celcius : 0.75 + 0.10(b) ph value of aqueous solution (e/v) : 3.5-5.0 (1%) (c) chloride content (w/w) : 31 % + 2 %(c) sulphate content : 10%(d) basicity : 40.0 + 5.0(e) mercury & lead : not desirable, note: (i) contractor shall submit purchase voucher, test certificate with date of manufacture and date of expiry of chemical with each lot supplied to department. (ii) chemical supplied should have min 04 month residual self life at the time of supply.