×

Method and apparatus for preparing a gas mixture for purposes of analysis and application of the method

  • US 5,284,054 A
  • Filed: 02/28/1992
  • Issued: 02/08/1994
  • Est. Priority Date: 09/04/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for determining an isotope ratio in exhaled CO2 in a breath sample comprising the steps ofat a sampling site, blowing respiratory air sequentially through at least one fixed bed of adsorbent for adsorbing water vapor and one fixed bed for adsorbing CO2,moving the bed for adsorbing CO2 from the sampling site to a testing site;

  • at the testing site, desorbing the CO2 by heating, andanalyzing the desorbed CO2 for isotope ratios therein.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×