Laboratory filtration

Laboratory filtration

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Laboratory filtration. School student using filter paper and a filtering funnel to filter an aqueous (dissolved in water) solution of copper (II) sulphate (CuSO4, blue, in beaker). This laboratory technique ensures that there are no undissolved crystals, sediment or other contamination in the filtered solution (filtrate, in conical flask).

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