Method and apparatus for preparing samples for analysis
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United States of America Patent
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Aug 23, 1988
Issued Date -
N/A
app pub date -
Aug 26, 1987
filing date -
Oct 24, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method of preparing samples for the purpose of analysis, in which at least one reaction agent and an initial sample are successively injected into a cartridge (90) provided with an orifice (92) in its lower portion, in such a manner as to cause the injected matter to pass through a column (91) of powdery agent contained within the cartridge, and in which the product of the last passage of injected matter through the column is retained for analysis. According to the invention, the reaction agents and the initial sample are successively injected into each cartridge after the top of the cartridge has been sealed in such a manner that the injection of the reaction agent or the sample causes the pressure at the top of the cartridge to rise, thereby accelerating the passage of the reaction agent or the sample through the column. The invention also provides apparatus for performing the method, which apparatus includes a moving carriage (120) enabling a waste receptacle (130) or individual tubes (150) to be placed beneath the lower orifices of the cartridges.
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