Chemistry: analytical and immunological testing – Metal or metal containing – Present in biological fluids
Patent
1982-06-18
1984-05-15
Turk, Arnold
Chemistry: analytical and immunological testing
Metal or metal containing
Present in biological fluids
436 8, 436 79, 436166, G01N 3320, G01N 3352
Patent
active
044488890
ABSTRACT:
In a method for colorimetric determination of calcium, the sample to be analyzed is mixed with a dye reagent of pH value at which that reagent does not produce a predetermined change when complexed with calcium ions; a first colorimetric measurement is made on the mixture of the sample and dye reagent; a second reagent is added to the mixture of the sample and dye reagent to shift the pH and activate the dye reagent producing the predetermined change; and then a second colorimetric measurement is made on the resulting mixture, the difference between the two colorimetric measurements being a measure of calcium in the sample.
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Bergkuist Carolyn
Liffmann Stanley M.
Neri Bruce P.
Instrumentation Laboratory Inc.
Turk Arnold
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