| 摘要 |
A cartridge (21) for holding a test specimen with an extremely small volume. The cartridge has a test chamber (63) and a vestibule (66) through which the test fluids are inserted into the test chamber. The cartridge has a stopper (60) having a pair of seals (72, 74), the first of which seals the test chamber inlet (65) between the vestibule and the test chamber, and the secon d of which seals the mouth (67) of the vestibule so that when the stopper is i n place, the test chamber is closed to the admission of air other contaminants and the vestibule is similarly closed against escape of the overflow from th e test chamber.
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