the vibrating table 2 when the door is lowered the mobile plate 20 comes into contact with the rack and through the action of pushers not shown causes the retractable stop 23 to be lowered with the arms 24 released by retraction of the door platen 22 may be lowered in the direction of the arrow until it occupies a horizontal position where it fills the last empty space existing between plate 20 and the vibrating table 2 continuity is ensured for loading or unloading between the rack and the vibrating table since stop 23 is retracted thus the mobile frame can pass from one to the other the operations for unloading and transferring the vials may take place in a way identical to the operation described relative to a mobile carriage via the mobile carriage and its pivoting flaps for unloading with the lyophilisation operation finished it is more economical not to immobilize the apparatus for too long and to unload all the vials simultaneously using a carriage with several stages each being equipped with a mobile transfer frame comparable to that for loading for questions of organization planning or availability of apparatus it may however be preferable to unload rack by rack in the loading room itself in a variant shown in fig8 the loading vibrating table 2 is shown whose upper tray 3 is fed with vials 5 by the.