An apparatus for the conditioning of plastics material pre-forms with a tempering space for receiving a plurality of plastics material pre-forms, with a supply device a removal device, and a conveying device which conveys the plastics material pre-forms from the supply device to the removal device in such a way that each plastics material pre-form remains in the tempering space for a preset duration of the dwell period. The temperature of the plastics material pre-forms upon leaving the removal device is substantially constant irrespective of a duration of the dwell period of the plastics material pre-forms in the tempering space and the conveying device is designed in such a way that each plastics material perform remains in the tempering space for a period of time of at least five minutes.