| 摘要 |
<p>A cap for containers used to store volatile liquid has a gas venting port (3) formed in the main body (1) of the cap which is attached to an opening in a container, a filter accommodation space (6) which connects with the gas venting port (3) formed in the bottom surface of the main body of the cap, a channel (4) formed in the central portion of a filter assembly installed in the filter accommodation space, two hydrophobic porous filter membranes (5,5a), one (5) installed over the innermost end of the channel (4), and the other (5a) installed between the filter assembly and the gas venting port (3), whereby a liquid passageway is formed, and an aqueous liquid (8) partly, but not completely, fills the interior of the assembly.</p> |
