| 摘要 |
The assembly comprises a filtration unit ( 1 ) and a gel growth medium cassette ( 80 ), the unit ( 1 ) and the cassette ( 80 ) being adapted to cooperate in order to occupy a nested position in which a membrane ( 3 ) covers the said gel growth medium ( 88 ), the said unit ( 1 ) and the said cassette ( 80 ) each being equipped with an intermediate stop ( 26, 100 ), it being possible for at least one of the two stops ( 100 ) to move clear so as to allow the said unit ( 1 ) to move from an intermediate position, in which the said membrane is spaced away from the said gel growth medium, into the said nested position. The method comprises the steps of selecting such an assembly, of engaging the said unit ( 1 ) on the said cassette ( 80 ) until the intermediate stop ( 26 ) of the said unit ( 1 ) comes into contact with the intermediate stop ( 100 ) of the said cassette ( 80 ), and the step of moving clear the said stop ( 100 ) able to move clear so as to allow the said unit ( 1 ) to move from the said intermediate position into the said nested position.
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