Abstract: A bottle treatment and conveying method and a bottle treatment installation is provided with a bottle producer or other bottle feed (2). At least one bottle transfer device (4) is provided as well as a plurality of trays (5) for the bottles, a transport device (11), optionally at least one discharge or loading station, preferably a said palletizing unit (22), and at least one treatment station (15). The bottles (26, 30) are transported in one or more said tray stacks (27) formed by said stackable trays (5), which have said closed side walls (24) and tightly surround the said bottles (26, 30), sealingly on all sides. The box-shaped trays (5) are stacked on top of each other for transportation, the trays in the stack sealingly closing each other and the top tray being sealed with a lid (31). The trays are separated at the treatment stations (15) and then restacked after the bottle treatment.