====== Precipitation of PbSO₄ and preparation of counting source for proportional counting ======

In this quest you will prepare counting source for Pb-210 measurement using proportional counter. First you will evaporate HCl from your sample. Then you will dissolve it in water and precipitate PbSO₄. This precipitate you will then transfer to counting planchet with the help of centrifugation.

How this is performed in real lab you can find [[http://videolectures.net/meet-cinch_modul30_po_pb_210_proportional_counting/|here]].