supply of chemicals supply of chemicals for environment lab of civil dept , list of chemicals , ethylene diamine tetra acidic acid ( edta ) 100gm , erichome black – t125ml , ammonia buffer solution 500ml , potassium chromate500gm , silver nitrate - 10gm , manganese sulphate - 500gm , sodium thio sulphate - 500gm , starch soluble - 500gm , sulphuric acid thermocole pack - 500gm , ammonium alum - 500gm , magenesium chloride - 500gm , sodium acetate anhydrous - 500gm , potassium nitrate - 500gm , acetic acid glacial - 500gm , sodium sulphate anhydrous -500gm , barium chloride - 500gm , ammonium sulphate - 500gm , sodium hydroxide pellets - 500gm , sodium azide - 100gm , potassium iodide - 100gm , sodium iodide - 100gm , indicator paper ph 1-14 ( full range ) - ls , d.m water ( deionised water ) - 5 lit , buffer capsule ph 7.0+0.05 - , buffer capsule ph 4.0 +0.05