This revision resource provides detailed notes on the practical techniques covered in the OCR A-Level Chemistry textbook, although the material is applicable to any exam board. The following methods are covered in these notes: Preparation of an Organic Solid (including filtration under reduced pressure and recrystallisation), Melting Point Determination (including using electrically heated melting point apparatus and the oil bath/Thiele tube method), Thin Layer & Gas Chromatography and Determ...