procurement of fine chemicals for ntpc farakka procurement of fine chemicals for ntpc farakka , ammonium molybdate ar / gr / excellar , oxalic acid ( ar ) , ansa, ar / gr / excellar, 100 gm , chmcl; sodium metabisulphite , chmcl:sodium sulphite , potassium permanganatear / gr / exclr, 500gm , hydrochloric acid, 1 n ampls ( 06pck ) ( lr ) , ethanol: analytical ( ar ) , chmcl:sodium hydroxide pellets ar:gr , chmcl:silver nitrate ar:gr , patton and readers reagent; indicator , methyl orange:ar / er / emparta grade , hydroxylamine hydrochloride ( ar / gr / exc ) , chloroformaranalit ( ar ) , chmcl:ferrous ammonium sulphate , mercuric thiocyanate : ( ar ) , naphtholbenzein ( ph indicator ) ar , ammonium thiocyanate; ar / gr / excelar , acids:ortho phosphoric acid ar : ( gr ) , sodium acetate trihydrate - purity-99% , mercuric chloride ar / gr , karl-fisher reagent ( coulometric without , potassium chromate ar , chmcl:buffer solution of ph-4.0 , chmcl:buffer solution of ph-7.0 , chmcl:buffer solution of ph-9.2 , stannous chloride ar / gr / excellar , sodium diphenylamine sulphonate => limited