Key steps in the procedure
The preparation of aspirin using a hot water bath
Recrystallisation and melting point test
Recrystallisation and Buchner filtration
Recrystallisation can be repeated more than once to ensure a very pure product, but each time the yield of product will decrease. Slow cooling results in bigger well defined crystals which are easier to filter and dry.
Melting point test using an oil bath
Melting point test using a Thiele tube
Melting point test using a melt station
Always quote a melting point as a range + or - and reference a data book value if you have one.