Abstract: A process and apparatus for the transfer out of a tight enclosure of a fluid solution contained in a polluted container (R1). The transfer is accomplished without removing the polluted container from the enclosure and without breaking the seal of the polluted container. After a clean container (R2) is placed in a receptacle (30) normally isolated from the remainder of the enclosure, the solution is transferred into the clean container (R2) vacuum by a needle. Transfer of the clean container out of the enclosure takes place pneumatically following rotation of a casing containing the receptacle.

Abstract: In an installation designed for pneumatically transferring pots (12) between a sampling unit, in which these pots are filled with a radioactive liquid sample and an analysis chain or line protected by an enclosure, with the receptacle (36) by which the pots enter the chain or line, is associated a force transducer (42). In conjunction with an electronic measuring means located outside the said enclosure, said transducer weighs the pots and makes it possible to detect when one of them is empty or inadequately filled. An ejection nozzle (66) connected to a compressed air source discharges the pot when it is weighed.