Liquid purification or separation – Processes – Chromatography
Patent
1987-06-11
1989-09-05
Spitzer, Robert
Liquid purification or separation
Processes
Chromatography
73 611C, 210772, 2101983, 422 61, 422 70, 422101, 436178, B01D 1102, B01D 1508
Patent
active
048636100
ABSTRACT:
A device and method for scraping and collecting adsorbent from located areas on developed thin layer chromatography plates and extracting substances from collected adsorbent. The above functions can be performed without additional apparatus. The device is constructed of polypropylene to allow for easy use, manufacture and low cost. The shell surrounds a primary filtering and retaining material and a secondary filter. The adsorbent is removed from the thin layer chromatography plate via a scraping edge and collected by aspirating the adsorbent into the device where it becomes embedded in the primary filtering and retaining material. The device can then be separated to allow facile addition of a solvent to elute the sample out of the device free of adsorbent. The scraping process is improved as a result of the polypropylene contact with the plate, the collection process minimizes loss of removed adsorbent, and the elution/filtration allows easy recovery of developed samples. These functions are accomplished within this device and therefore time spent in preparation and cleanup is kept to a minimum. This device is potentially disposable.
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