hold the pressure. The holes in the cap (7), bearing (6), fitting (4), and washer (3) are of sufficient diameter to permit facile insertion and withdrawal of the capillary tube, the only snug fit being that between theferruleandthe column. Hencethe reservoiriseasyto dismantle, clean, and reassemble with new solution orcolumn in a matter of a few minutes. As with any operation at elevated pressure, a safety shield should of course be employed as well,
Acknowledgments
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