| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a cartridge filling column for solid phase extraction that has a large number of theoretical stages, reduces unnecessary gaps so as to exhibit stable performance, and prevents leakage of the liquid to be detected. SOLUTION: In this manufacturing method of the cartridge filling column for solid-phase extraction, a lower filter 9 is inserted into a cylindrical material filling room 10 of a cylinder vessel 2 for column formation, made of thermoplastic synthetic resin, filled with powder filling material 11; an upper filter 8 and a cylinder vessel cap 3 for column formation made of thermoplastic synthetic resin are attached to the cylinder vessel 2 for column formation; then the cylinder vessel 2 for column formation and cylinder vessel cap 3 for column formation are integrated, while vibration is applied to an under-pressure filling column 1 by an ultrasonic welder 13. A welding projecting part 5, containing a sufficient amount of resin for welding, is arranged on the welding surface of one of the cylinder vessel 2 for column formation and cylinder vessel cap 3 for column formation so as to surround it, and the distance L20-L22 between the welding surfaces, when the projecting part 5 is brought into contact with the other welding part before the welding is set in a range of 0.6-5.0 mm. COPYRIGHT: (C)2010,JPO&INPIT
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