bids are invited for supply of calcium based granular chlorination chemical - name of work. supply of chemical for water treatment system and allied essential items udner ge ( af ) borjhar. 1. supply of clacium based granular chlorination chemical ( chlorine contain 65-70% ) with corrosion inhibitor & anti scaling agent to prevent distribution pipe line and safe for humman consumption when used as water disfactant in 40 / 45 kg factory sealed plastic containers. note ( i ) contractor should produce test certificate ( from central or state government lab ) for % chlorine contain from any one drum of his supplied chlorination chemical forwork order. ( ii ) certificate from any dcgi approved lab for safe in human consumption to be produce by the contractor from the chemical manufacturer which is not earlier than one year ( iii ) the claim for corrosion inhibitor & anti scaling agent to prevent using or damage in distribution pipe line & accessories must be ratified by e-in-cs branch letter ( copy of e-in-cs branch letter must be submitted to qualify for bid / tender ) ( iv ) the quantity of materils should be taken from the contractor in three phase only. , supply of stable bleaching powder - 2. supply of stable bleaching powder ( grade-i ) confirms to is-1065: part-i 2019 in 25 kg factory sealed container / drums. make-vikram / bengal chemical / dcm shriram / orient or equivalent as approved by accepting officer. , supply of chlorine tablets - 3. supply of chlorine tablets conatined in plastic cylindrical sealed disposable sanitiser refill ( dia 2.5 inches + 0.5 inches height 10 inches + 0.5 inches ) for disinfection of drinking water with arrangement for controlled release of disinfactant water. note the product media should have heavy metal contaminers below detectable limits & must pass the acute toxicity ( confirm to non toxicity fdor mammalian cells ) and safe for human health safety point. , supply of purity verifier in plastic box - 4. supply of purity verifier in plastic box for testing of chlorine & ph with comparator . make - declibac / eqvt. , supply of water pre-filter - 5. supply of water pre-filter ( height 51 cm, filter porosity 180 micron ) with corrosion & scale inhibitor for prefill capsules. , supply of tablets for chlorine rapid - 6. supply of tablets for chlorine rapid for purity verifier. make- declibac / eqvt. total quantity : 1