| 摘要 |
<p>The device has a tube (8) which is fused at one end and closed at the other by a flexible plug (6), and containing reagents (7). The device has further a test tube filled with sorption material, connected to a second adapter with a hollow needle, and a second tube fused at one end and closed at the other by a flexible plug. It is evacuated to a given underpressure, so that material may be sucked in through the needle.</p> |
