| 摘要 |
<p>This invention relates to a syringe type column for liquid chromatography. A packing (4) and a developer solvent (5) are placed in a cylindrical barrel (1), and an air port (2a) is bored in a plunger (2). Development is effected, while the air port (2a) is closed to prevent air leakage, by pushing down the plunger (2). When the plunger (2) is pulled out in order to supplement the developer solvent, the air flows into the cylindrical barrel (1) through the air port (2a) so that the inside of the barrel (1) is held under a negative pressure and the packing phase (4) is not disturbed.</p> |
