Quick extraction kit

A quick extraction kit comprising:

• a column having an interior space to be filled with materials for extraction and cleanup, the column further having at its top an opening communicating with the interior space and a flange surrounding the opening, and at its bottom an lower tube communicating with the interior space, the lower tube having an outlet at its bottom;
• and
• a cap having a base plate for covering the opening of the column, an upper tube extending upward from a top surface of the base plate, and a pair of reinforcing ribs formed on the base plate and at opposite sides of the upper tube, wherein the base plate of the cap and the flange of the column together creates a sealing joint therebetween by spin welding;
• the upper tube of the cap is in communication with the interior space of the column and has an inlet;
• and each of the reinforcing ribs has a bottom surface bonded with the top surface of the base plate, and an inner side surface adjacent to the bottom surface and bonded with a peripheral side surface of the upper tube.