Chemistry: physical processes – Physical processes – Crystallization
Patent
1978-06-05
1980-11-18
Marantz, Sidney
Chemistry: physical processes
Physical processes
Crystallization
23925, 252408, 422 56, G01N 3352, G01N 2178, G01N 3122
Patent
active
042343135
ABSTRACT:
A testing composition provided in test-strip form, which comprises a predetermined amount of a colored indicator on a solid, inert support, the indicator being responsive to the material being tested in such a manner it loses its color in a direct proportion to the amount of material present. The testing composition may be provided with a semipermeable membrane to prevent the deposition of suspended particles on the composition. Also provided is a method of determining the minimum or maximum level of a material, for instance uric acid, in fluids using the testing composition and comparing it with a comparator strip.
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Brown Donald
Burroughs Wellcome Co.
Marantz Sidney
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