COLORIMETRIC SOLUTIONS

Cobaltous chloride CS (Red solution) (Mol. Formula: CoCl2.6H2O, Mol. Wt: 237.93) Reagents: Hydrogen peroxide TS: Pipette 10 mL of 30% hydrogen peroxide solution into a 100 mL volumetricflask, dilute to volume with purified water.
Sodium hydroxide solution (1 in 5) : Mix 10 g of sodium hydroxide with 50 mL of purified water. Dilute sulfuric acid (1 in 4) : Mix 10 mL of sulfuric acid with 40 mL of purified water.
General Testing Procedure, COLORIMETRIC SOLUTIONS, Standardization

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Preparation of barium chloride solution

Pour about 75 ml of Distilled water into a 250 ml capacity beaker. Weigh 10.0 grams of Barium Chloride LR and transfer slowly, into above said beaker, through it‘s side walls, while gentle mixing, by using a glass rod. Transfer prepared solution into a 100 ml volumetric flask, by using a glass funnel. Rinse the beaker and funnel with few ml of Distilled water, and allow to add into the contents of volumetric flask. Make up the volumetric flask to mark with Distilled water, remove the funnel, keep the lid to close the volumetric flask and shake gently to mix the solution. Transfer the prepared solution into a suitable container and label with all necessary details. The resultant solution is having the concentration of 10.0% w/v. Barium Chloride , Distilled water, Glass rod, Glass funnel, Calibrated Analytical Balance

preparation of sodium hydroxide solution dilute

Pour about 75 ml of distilled water into a 250 ml capacity beaker. Weigh 5.0 grams of Sodium Hydroxide Pellets LR and transfer slowly, into above said beaker, through it‘s sidewalls, while gentle mixing by using a glass rod. Transfer prepared solution into a 100 ml volumetric flask by using a glass funnel. Rinse the beaker and funnel with few ml of distilled water, and allow to add into the contents of volumetric flask. Make up the volumetric flask to mark with distilled water, remove the funnel, keep the lid to close the volumetric flask and shake gently to mix the solution. Transfer the prepared solution into a suitable container and label with all necessary details. The resultant solution is having the concentration of 5.0% w/v. Sodium Hydroxide Pellets , glass funnel, sidewalls, glass rod

Operation of Gas Chromatograph

To lay down the procedure for operation of gas chromatograph (SHIMADZU GC-2010 with AOC-5000) system. Shimadzu gc system, gc-2010. Aoc 5000 headspace sampler and auto-injector. 3gc solution software. Ensure that the working bench and area is clean. Always ensure gas line pressure is maintained above 4kg/cm2 in all gas supply lines . Gas Chromatograph , tighten, injection , magnetic force

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