Colorimetric determination of chloride ions
CA 1286959 C · Owner: Kaufman, Richard A. · Inventors: Kaufman, Richard A.; Wesolowski, Alex
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for measuring chloride ion concentration in a sample of body fluid for example, serum or plasma in which a sample blank is made in the same cuvette after the test measurement has been made; which method comprises the steps of:, 1) Mixing a sample of body fluid with a water-soluble color reagent containing Fe+++, Hg++ and SCN- ions: 2) Measuring the absorbance of the mixture of Step 1 at from about 450 to about 550 nm:, 3) Adding an iron complexing reagent to the mixture of Step Z wherein said iron complexing reagent complexes iron and. forms essentially colorless complexes with Fe+++ and Hg++; and, 4) Measuring the absorbance of the mixture of Step 3 at …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.