| 摘要 |
The vessel has a tube (7) which is closed at both ends so as to be gas-tight by means of screwed-in closing pieces (1,10). The tube (7) contains a gas cartridge (6) and an insert tube (8) containing a preparation carrier (17). A pin (5) arranged on the screwed-in end of one closing piece (1) engages into the valve orifice of the gas cartridge (6). The dimensions of the tube (7) are such that, when the other closing piece (10) is screwed in, the gas cartridge (6) filled with a protective gas is pushed against the pin (5), as a result of which the valve is opened. The outflowing gas displaces the air which is located in the vessel and which passes into the ambient atmosphere through a non-return valve (11). <IMAGE>
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