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Device for trapping and assaying C14 labelled carbon dioxide and method of use

  • US 6,265,221 B1
  • Filed: 06/07/1999
  • Issued: 07/24/2001
  • Est. Priority Date: 12/09/1996
  • Status: Expired due to Term
First Claim
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1. A device for use in trapping and assaying 14CO2 in air exhaled by a person to which a 14C labelled compound has been administered, comprising first and second substantially flat oblong duct forming elements having long and short edges joined to each other at their respective edges except for one of their short edges and forming a duct between them, the first duct forming element including a gas permeable matrix element for absorption of CO2, the device being provided with an indicator for detection of CO2 absorption and a film element of low β

  • -radiation absorptivity interposed or interposable between the matrix element and a β

    -radiation measuring instrument.

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