Abstract: The invention relates to a device for checking for tightness a closure or a connecting weld provided in a flexible fluid-filled hose, which device comprises two clamping members slidable relative to each other, forming in an inserted position a profile with at least one clamping space and an expansion space, as well as folding means, the arrangement being such that at least one hose portion can be folded and clamped in the at least one clamping space, so that the fluid present in the at least one hose portion is pressed to another hose portion including the closure or connecting weld to be checked, which other hose portion can expand in the expansion space.

Abstract: The present invention relates to a bag for the cryopreservation of blood cells, comprising a joining piece and a shrink tube to connect the bag with a non-PVC tubing. The tubing is resistant to the liquid nitrogen temperature and can be used for RF sealing and sterile docking both before and after cryopreservation.

Abstract: A closed sterile bag system contains at least two separate compartments with communication between them temporarily blocked and with one of the compartments containing an erythrocyte sedimentation solution. The umbilical cord blood is collected and contacted with an anticoagulant whereupon the blockage is removed and the erythrocyte sedimentation solution is caused to contact the blood all within the closed sterile system.