procurement of fine chemicals and standards for ntpc rihand, vindhyachal and singrauli procurement of fine chemicals and standards for ntpc rihand, vindhyachal and singrauli , benzoic acid-blisters:thermochemical , acids:nitric acid ar : ( gr ) , oxalic acid ( ar ) , xylene;rectified. , hexane , hydrochloric acid conc. ar / gr , methanol analytical ( ar ) , memrane filter, cellulose nitrate, 47 mm , chmcl:ferrous ammonium sulphate , manganous sulphate gr grade , potassium hydroxide ar / gr / excelar , sodium hydroxide standard:1n in ampoule , reagent: kf appln-water standard , hydrochloric acid n / 1 cvs pack 6 ampules , acid:oxalic acid:ar / er / emparta grade , ion-chromatograph:7 anion standard , universal indicator solution ph-4 to 11 , chmcl:ortho toludine , sodium molybdate , chmcl; sodium metabisulphite , chmcl:sodium iodide :gr , chemical-lab ar sodium chloride , n ( 1 napthyl ) ethylene diamine neda , hexane , sulphuric acid: ( ar / gr / excelr ) , petroleum ether 60-80 deg. c , eriochrome black t, ar , patton and readers reagent; indicator , phenolphthalein indicator powder , phosphate std soln1000mg / l ar / gr / excelar , chloride standard solution 100 ppm , std soln. copper 1000ppm:nist , silica standard : ( ar ) , ammonium molybdate ar / gr / excellar , chmcl:nh3 solution gr:gr , ammonium acetate gr , chmcl:ammonium chloride , ammonium ferric sulphate , chmcl:ammonium oxalate , barium perchlorate ar / gr / excelar , chmcl:dithiazone , ferroin solution, redox indicator , ferrous ammonium sulphate , cm:-glycerin lr :r-lab ( lr ) , mercury ( ii ) chloride gr , potassium chloride :argrade , potassium hydrogen phthalate gpr grade , potassium hydroxide pellets ar , potassium nitrate gr / ar / excelar , chmcl:silver nitrate ar:gr , sodium molybdate , chmcl:sodium hydroxide pellets ar:gr , chmcl:sodium sulphite , sodium thiosulphate ar / gr / excellar , stannous chloride , chmcl:thorine indicator: ( lr ) , chmcl:tolune ar:gr , formic acid; ar / gr / excelar grade , acid :oxalic , sulphuric acid ar / gr / excelar analy ( ar ) , methanol analytical ( ar ) , alchohol : ethanol : ( gr ) , chmcl:sodium meta bi sulphate lr:gr , soln:hydrogen peroxide:tr , ammonium molybdate ar / gr / excellar => limited