Liquid purification or separation – With means to add treating material – Chromatography
Patent
1978-11-03
1980-02-05
Adee, John
Liquid purification or separation
With means to add treating material
Chromatography
210287, B01D 1508
Patent
active
041871774
ABSTRACT:
In a column for high pressure liquid chromatography (HPLC) having a tube filled with sorbent for the passage of a solvent medium and samples to be analyzed, and a pressure jacket concentrically surrounding said tube, so that an annular interspace is provided which is filled with the solvent medium fed under pressure and in which the pressure can be equal or higher to the pressure within the internal tube, both ends of the interspace are sealed by means of packings surrounding the internal tube like stuffing boxes, and the ends of the internal tube are provided with perforated stoppers, which extend with a stud-like elongation into the internal tube to the region which is surrounded by the respective packing, so that the elongation support the wall of the internal tube against the sealing pressure of the packings. Accordingly, the internal tube can be a thin-walled glass column or even a hose of flexible plastics. Furthermore, at the inlet end of the column a valve is provided for adjusting the pressure within the internal tube with respect to the pressure within the interspace.
REFERENCES:
patent: 4093550 (1978-06-01), Stahl et al.
Adee John
Jeffery Donald D.
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