MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Editorial use only.
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).
Model release not available. Property release not required.