Chemistry: analytical and immunological testing – Including sample preparation – Liberation or purification of sample or separation of...
Patent
1987-08-26
1988-08-23
Richman, Barry S.
Chemistry: analytical and immunological testing
Including sample preparation
Liberation or purification of sample or separation of...
436 47, 436161, 422 59, 422 65, 422 70, 422101, 2101982, 210287, 7386332, G01N 118, G01N 3502
Patent
active
047660821
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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Kummert Lynn M.
Richman Barry S.
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