Testing of aqueous solutions

Details Testing of aqueous solutions Testing of aqueous solutions

1976-09-07

1979-09-04

Turk, Arnold

Chemistry: physical processes

Physical processes

Crystallization

422 56, G01N 3122

Patent

active

041667190

ABSTRACT:
Aqueous solutions such as chromium plating solutions are tested by contacting the solution with a water permeable medium such as a folded filter paper, causing the solution to diffuse upwardly through the medium and contacting separate portions of the diffusing solution in the medium with a water soluble ferrocyanide salt and with a water soluble iron salt respectively. The test may be performed when a filter paper, whose ends have been impregnated respectively with potassium ferrocyanide and a ferrous salt.

REFERENCES:
patent: 3552928 (1971-01-01), Fetter
patent: 4033720 (1977-07-01), Silvestri

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