attach receiving chamber with screen inserted,using springs or rubber bands.fasten apparatus on stirring plate with standard clamp and stir magnetic 15 min.
Remove apparatus and invert. open stopcock of reaction chamber to equalize air pressure.
place opening of receiving chamber in 100ml graduate containing 10mlน้ำ and open top stopcock.Close bottom stopcock.with top stopcock open,briefly apply vacuum from aspirator to remove solvents more thoroly,and drain solvent into graduate. Invert apparatus to original position.Add 10ml thru top stopcock