Column and column device for low pressure-high speed liquid chromatography and a method for using said column device

A column for low pressure-high speed liquid chromatography, comprising:

• a column body having an integral structure comprised of a transparent or translucent resin and including (i) a main body portion having first and second opposite ends, said first end being open, and (ii) a spout-like extension extending from the second end and forming an outflow opening;
• a pair of upstream and downstream filters provided in said column body to form a column chamber therebetween, said column chamber receiving a granular chromatographic filler therein;
• a head portion comprised of resin, said head portion being detachably secured to said first end of the column body having an inflow passageway extending therethrough, and including an insertion portion extending into an interior of the column body and
• a pressure-proof ring fitted around an outer periphery of the first end of the column body such that the pressure-proof ring opposes the insertion portion of the head portion that extends into the interior of the column body.