Accession Number : AD0165103

Title :   Gas Chromatograph.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Matson,James H. ; Goings,Robert

Report Date : 21 AUG 1973

Pagination or Media Count : 13

Abstract : The patent describes a gas chromatograph. It employs the response of a flame ionization detector to test air and liquid and gaseous oxygen and nitrogen for the presence and amounts of the following impurities: total hydrocarbons, individual hydrocarbons, carbon monoxide/carbon dioxide, water and freons. The invention is portable and may be used for quality control and quality assurance testing and has a sensitivity in the range of parts per million (ppm) by volume. The invention can accept a low pressure range of gases for analysis and is designed to sample fluids at cryogenic temperatures for a direct analysis from closed piping systems. The invention further uses two chromatographic columns, is designed to permit carrier gas backflushing of each of these columns and further features the backflushing of one colum into the other column.

Descriptors :   *Patents, *Gas chromotography, *Hydrocarbons, *Carbon monoxide, *Carbon dioxide, *Water, Field equipment, Portable equipment, Sensitivity, Halogenated hydrocarbons, Test methods, Gases, Liquids, Purity

Subject Categories : Physical Chemistry
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE