Analytical determination of substances in solution

Details Analytical determination of substances in solution Analytical determination of substances in solution

1976-10-20

1978-02-14

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

356191, G01J 352, G01N 2102

Patent

active

040736237

ABSTRACT:
A device for supporting sample-containing tubes in generally vertical parallel adjacency, one of the tubes containing an unknown sample and the other containing a reference or comparison sample, with the bottoms of the tubes located in predetermined relationship with a color table or chart having colored or shaded portions preselected and calibrated in accordance with the particular comparison to be made, the table or chart being movable at a right angle relative to the tubes such as to provide visual comparison between the samples based on color or optical density.

REFERENCES:
patent: 3520626 (1970-07-01), Hach

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