admin General Test Procedure Limit Test Sulphate Purpose This procedure is applicable to all incoming Raw materials. Apparatus Nessler Cylinder Reagents 25%w/v Barium chloride solution 5M acetic acid (Dilute 28.5ml of acetic acid to 100ml with water) Sulphate standard solution (10ppm SO4): Dissolve 181mg of potassium sulphate in 100ml of water, dilute 5ml of this … Read more
General Test Procedure Limit Test Heavy Metals Purpose This procedure is applicable to perform limit test for heavy metals. (Perform the test by any one method as specified in the individual monograph) Apparatus None Method A Reagents Lead standard solution (20 ppm Pb) Dilute acetic acid Dilute ammonia solution Hydrogen Sulphide solution Preparation of … Read more
General Test Procedure Limit Test Iron Purpose This procedure is applicable to all incoming Raw materials. Apparatus Nessler Cylinder Reagents 20%w/v citric acid solution Thioglycollic acid AR Ammonia solution Iron Standard Solution (20ppm Fe): Dissolve 346mg of ferrous ammonium sulphate in 10ml of 1M sulphuric acid and dilute to 100ml with water. Dilute … Read more
General Test Procedure Limit Test Chloride Purpose This procedure is applicable to all incoming Raw materials. Apparatus 50ml Nessler Cylinder Reagents 0.1M Silver Nitrate solution Dilute Nitric Acid (10%w/w, dilute 106 ml of nitric acid to 1000ml with water) Sodium chloride A R grade Chloride Standard Solution (25ppm Cl): Dissolve 82.4 mg of sodium chloride … Read more
General Test Procedure Clarity of Solution Purpose This procedure is applicable to all incoming Raw materials. Apparatus Test tubes Reagents Hydrazine Sulphate Hexamine Purified water Procedure Into separate matched, flat-bottomed test tubes, 15 to 25 mm in internal diameter and of colorless, transparent, neutral glass, place sufficient quantity of the solution being examined … Read more
General Test Procedure Non Volatile Matter and Residue on Evaporation Purpose This procedure is applicable to all incoming Raw materials. Apparatus Calibrated weighing balance water bath Evaporating dish Reagents None Procedure Place clean and dry evaporating dish in an oven at 105°C for 30 minutes. Remove it and keep it in desiccators for … Read more
General Test Procedure Distillation Range Purpose This procedure is applicable to all incoming Raw materials, In-process and Finished products. The distillation range of a liquid is the temperature interval, corrected to a pressure of 101.3 k Pawithin which the liquid, or a specified fraction of the liquid. Apparatus Distillation Range of 200ml capacity Condenser … Read more
General Test Procedure Weight per ML and Specific Gravity Purpose This procedure is applicable to all incoming Raw materials, In-process and Finished products. Apparatus Pycnometer specific gravity bottle Calibrated glass thermometer Balance Reagents None. Procedure Procedure for Volumetric Flask Take the wt. of empty Pycnometer. Fill the Pycnometer with liquid and maintain at 25°C … Read more
General Test Procedure Melting Range and Freezing Point Purpose This procedure is applicable to all incoming Raw materials, In-process and Finished products. Apparatus Melting point apparatus Thin-walled capillary glass tubes of hard glass, closed at one end pestle mortar Beakers Test tubes Water bath Calibrated glass thermometer Balance Reagents None Procedure Procedure for … Read more
General Test Procedure Sulphated ash purpose This procedure is applicable to all incoming Raw materials. Apparatus Muffle furnace Balance Silica or Platinum or porcelain or quartz crucibles Graduated pipette1 ml Hot plate Desiccator Nickel tongue Reagents Sulphuric acid Procedure Keep crucible in muffle furnace at temperature 800° ± 25°C for 30 minutes. Take out … Read more