Reagents
1. Petroleum ether (boiling point 60-80oC) 2. Cotton wool free of fat
Apparatus
1. Soxhlet extraction unit (extraction beaker, extraction unit, thimble) 2. Fume cupboard 3. Heat source, either electric heating mantle, or steam bath 4. Desiccator with silica gel disiccant 5. Glass rod 6. Hot air oven 7. Analytical balance (at least 1mg sensitivity)