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On-site method of providing analysis of potency and purity of pharmaceutical compounds

  • US 7,660,678 B2
  • Filed: 03/22/2007
  • Issued: 02/09/2010
  • Est. Priority Date: 02/05/2004
  • Status: Active Grant
First Claim
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1. A method of confirming the concentration or purity of a sample of a liquid having a desired concentration or purity, comprising the steps of:

  • introducing a sample of a liquid having a desired concentration or purity into a liquid sample channel of a hand-held analytical instrument, said hand-held analytical apparatus comprising apparatus for performing a spectral analysis of the sample in at least two liquid sample channels each having a different path length of about 0.025 mm to at least about 1.0 cm;

    performing a spectral analysis of sample liquid in said sample channel with said apparatus for performing a spectral analysis;

    obtaining data regarding the spectral analysis of the sample;

    comparing the data regarding the spectral analysis of the sample having a desired concentration or purity to spectral analyses of samples having a predetermined concentration or purity stored in a retrievable form;

    mathematically calculating a concentration or purity of the sample having desired concentration or purity from the comparison; and

    confirming whether or not the determined concentration and purity of the sample having a desired concentration and purity is a desired concentration and purity.

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