' ' Aluminium Sulphate Al2(SO4)3. (14-18)H2O, Non- Combustible, Non-Hazardous, commercial filter Alum as per international water grade standard. 1. Aluminium content as Al2O3, % (w/w) Minimum: 17% Minm. 2. Water soluble Iron compound as Fe: 0.5% Maxm. 3. Iron as Fe2O3: 0.5% Maxm. 4. Insoluble matter: 0.5% Maxm. 5. Size of Aluminium Sulphate (Lump size): Not more than 2' ' ( Two inch) 6. pH of 5% solution Minimum: 2.8 7. Colour: Dry, Milky white solid in lump form 8. Lead (Pb) as ppm, Maximum: 30 9. Packing: 50.00 Kg net weight new polypropylene bag mentioning: (I) Name, Address of the Manufacturer/Supplier (II) Date of Manufacturing & expiry (III) Final Destination/Delivery Point (IV) Net weight & Batch no. (V) Brief description of the content 10. During the production time, supplier must arrange a factory visit for Dhaka WASA representatives. 11. Manufacturer or supplier should provide a laboratory test report of their own for every batch. ' '
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