| 摘要 |
<p>The invention concerns a method and a device for drawing micro-samples of a pressurised fluid contained in a container (1), for analysis of said samples, in particular by chromatography. The method comprises steps which consist in: communicating a container (1) containing the pressurised fluid to be sampled with a transfer circuit (6) traversed by a driving fluid, through a capillary orifice (4) located at the capillary tube (5) end; opening and closing said capillary orifice (4) using a mobile lock piston (7); actuating said lock piston (7) by deforming an extensible chamber (8) containing said mobile lock piston (7) sealed. Thus, the tightness around said mobile lock piston is ensured without requiring a sliding fluid seal.</p> |
