Ion exchange device with chamber having indicator means

Details Ion exchange device with chamber having indicator means Ion exchange device with chamber having indicator means

1990-05-29

1991-12-31

Silverman, Stanley S.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Transparent

210264, 210282, 210283, B01D 2702, B01D 35143, B01D 2412

Patent

active

050769120

ABSTRACT:
In an apparatus for water treatment and comprising a pod containing a weakly acid or weakly basic ion exchanger and of which the inlet aperture is formed in the region of one end while the outlet orifice is formed in the region of the other end, in each case by a means which is permeable to liquid while retaining the ion exchanger, in order to render visible the fact that the ion exchanger is exhausted, there is in the region of the outlet orifice of the pod a chamber containing a strongly acid or strongly basic ion exchanger with a color indicator bonded thereon and the walls of which consist at least partially of a transparent material.

REFERENCES:
patent: 2749307 (1956-06-01), Ellison
patent: 2761833 (1956-09-01), Ward
patent: 2778798 (1957-01-01), Klumb et al.
patent: 2781312 (1957-02-01), Klumb et al.
patent: 3327859 (1967-06-01), Pall
patent: 3355018 (1967-11-01), Smith
patent: 3497069, Lindenthal et al.
patent: 3625652 (1971-12-01), Fujimoto et al.
patent: 3630683 (1971-12-01), Robb
patent: 4826594 (1989-05-01), Sedman
patent: 4893422 (1990-01-01), Mahlich et al.

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