procurement of stores for day to day maintenance and servicing of 800 lph ro water purifications plants ( 02 nos ) installed near ankur play school and 168 men barrack ( new ) at sts bsf bangalore as per boq , acidic cleaner- 7020 , specific gravity-1 . 05 . 0 . 05 , volaties-low , appearance & odour: very light greenish yellow clear liquid with stringent odour- ph@ 25 degree c ( 5% solution ) - 0 . 60 . 0 , silica cleaner-7030 , description-ro membrance silica descalant , blend of mineral acids- 305 45 , vapour density- similar to water , volatlies-low , , appearance & odour- light whitish colour hazy liquid with very mild odour- ph @ 25 degree c ( 5% solution ) - 4 . 61 . 0 , soloubility in water- completely soluble . , alkali cleaner 7070 , specific gravity- 1 . 14 +_ 0 . 05 , volatlies-low , appearance & odour- light whitish colour hazy liquid with characteristic odour , ph ( 5% v/v ) - 10 . 66+- 1 . 0 , abt antiscalant -7040 , type of chemical- hydroxyethylidene diphosphonic acid ( hedp ) , chemical purity in %age-95 , biodegradable- yes , food grade-yes , chemical ph value-0 . 5-2 . 5 , solubility in water%-92 , freezing point-0 to -100 , boiling point , c-100 , specific gravity-1 . 1 , corrosian resistance-yes , low ph industrial grade liquid form antiscalant , 5 micron 20 long cartridge , filtech taiwan polypropylene , cartridge filter , size- 10 , 20 , 30 , 40 , 50 , 60 , diameter -2 . 5 , 4 ( od 60-115 mm & id 27-30 mm ) , micron rating- 1 , 5 , 10 , 20 , 50 , 100 with following parameters :- i ) polypropylene fibre and polypropylene core . ii ) maximum operating temperature 70 degree c , iii ) operating pressure up to 24 bar . , sodium bio carbonate , product id- 5116877-48494377573 , refined grade-suitable for aerated water and baking powder industry , conforming to is 2124 ( latest ) , , form- white , minutely crystalline powder . , digital pressure switch , hi-and low pressure switch , low differential switching , bellows technology , high vibration stablity , wide pressure ranges , high reliability , different sensing elements . , pu tube & connector , pvc connecting pvc tube , dia 6 mm , length - 3 mtr , membrane 40x40 , hydranautics group , polysulfide membrane model , cpa 4040 for lph ro with following parameters . i ) length- 40 inches , ii ) diameter 4 inches ( hydranautics/dow flitch brand ) , amc charges for six months , champion ptfe tape 19 mm product id-5116877-95255971027 , purity-min- 99 . 9% , density , g/cm3- 0 . 6 , material- polyterafluoroethylene ( ptfe ) film , elongation , min- 75% , length-12mtr , width-0 . 5 inch , thickness- 0 . 075 mm