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| Keywords: Air-free filtration.png Air-free filtration svg Air-free filtration <U>Apparatus</U> a receiving Schlenk flask pink joint b glass filter sinter/frit c filter stick d sealing bulb e suspension containing Schlenk flask blue joint f stopper <U>Method</U> 1 Dry apparatus and place under vacuum 2 Place filter stick and receiving flask pink joint on suspension containing flask blue joint Solution blue precipitate green 3 Invert kit light vacuum applied to lower flask top flask sealed Liquid passes through sinter Precipitate trapped on sinter Optionally the precipitate can be washed with fresh solvent 4 Filtration complete remove vacuum and fill with inert gas from top Schlenk flask 5 Remove filter stick to obtain filtered solution blue Note if precipitate is required this can be collect either in a glove box or by washing a solvent through filter stick that will dissolve precipitate Own Quantockgoblin Schlenk flasks Filtration | ||||
