| 摘要 |
<p>The invention relates to sampling tube comprising a glass tube (2) with two closed ends (3), the sampling tube (1) being filled, at least over a portion of the length of the tube, with an adsorption material (4), the adsorption material (4) being confined between two gas-permeable plugs (5). According to the invention, the plugs (5) are manufactured from completely inert material and no non-inert material is present in the sampling tube. The invention further relates to a sampling tube whose ends (3) are closed off with sealing caps (6) which are manufactured from TEFLON TM , the sealing caps (6) comprising an end portion (7) and a cylindrical stopper (8) integrally connected therewith, which stopper (8), at least locally, has an external diameter receivable with a proper fit in the interior of the glass tube (2), the end portion (7) having a diameter greater than the internal diameter of the glass tube (2). The invention further describes a method for manufacturing such sampling tubes. <IMAGE></p> |
