KCTS9
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        Grades

        9-13+

        Accessibility

        Auditory, Visual

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        Unclogging a Column

        If after opening the stopcock during column preparation, the stopcock fails to flow or is flowing slowly, there may be particulate matter blocking the sieve. In this video produced by WGBH, watch how the resin can be redistributed by picking up the column or by using a pipette to mix the solution.

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