Chemistry: analytical and immunological testing – Optical result – Spectrum analysis
Patent
1995-03-03
1996-04-09
Snay, Jeffrey R.
Chemistry: analytical and immunological testing
Optical result
Spectrum analysis
422 8205, 422112, 356316, 356328, G01J 336, G01P 2162
Patent
active
055061494
ABSTRACT:
A spectroanalytical system includes housing structure with vent structure open to the atmosphere; radiation dispersing apparatus in the housing structure for dispersing radiation into a spectrum for application to sensor apparatus; sample excitation apparatus for exciting sample material to be analyzed to spectroemissive levels for generating a beam of radiation for dispersion by the dispersing structure; a source of gas; structure for flowing gas from the source into the housing structure for exhaust from the housing structure through the vent structure at a flow rate that is less than one percent of the volume of the housing structure per hour; first control structure for maintaining the pressure of the gas in the housing structure at a constant (within about one millibar) pressure independent of atmospheric pressure; and second control structure for maintaining the temperature of the gas within the housing structure constant within about 0.1.degree. F. during system operation.
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Crawford Richard L.
Tobey Arthur E.
Snay Jeffrey R.
Thermo Jarrell Ash Corporation
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