Apparatus and method for determining the osmolarity/specific gra

Details Apparatus and method for determining the osmolarity/specific gra Apparatus and method for determining the osmolarity/specific gra

1980-10-31

1982-09-28

Gill, James J.

Measuring and testing

Specific gravity or density of liquid or solid

73 643, G01N 900, G01N 1304

Patent

active

043511830

ABSTRACT:
A novel apparatus and method for determining osmolarity and/or specific gravity of a sample solution, the apparatus including a plurality of test solutions, each test solution having a predetermined specific gravity within a predetermined specific gravity range and also containing the dye, the dye being activated by substances in the sample solution. Test solutions having a higher specific gravity than the sample solution will experience osmotic diffusion across the semipermeable membrane and activation of the dye therein. The test solutions are sequentially arrayed on a support member so that the next succeeding test solution without a color change indicates the degree of osmolarity and/or specific gravity of the sample solution.

REFERENCES:
patent: 3139328 (1964-06-01), Jacob
patent: 4015462 (1977-04-01), Greyson et al.
patent: 4046514 (1977-09-01), Johnston et al.
patent: 4205043 (1980-05-01), Esch

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