How to dry a solution over magnesium sulphate

Place the solution to be cliied in a clean, dry conical flask. The flask siiould not be more than half-full. 

Add smalT quantities of MgS04 (between 0.1 g and 1.0 g depending upon the volume of solvent) and swirl the conical flask between each addition. 

At first the MgSOn will slick lo the sides and bottom of the flask where it contacts with the water, but on further additions it will eventually form a free-flowing powder in the liquid and the solution will appear very cloar and bright. 

Gravity filter the dried solvent layer through a fluted filter paper into a clean, dry flask. Thu 

Rinse the MgS04 in the conical flask with a few millilitres of pure dry solvent and filter it, to 

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