I'm working for small, start-up medical device firm and preparing for 'Accelerated aging' for device. Since our machine for aging is a little bit small, we cannot put all samples in the machine at the same time. So I plan to put samples for 6 months first and 1 year sample later. So samples for 1 year aging will be in storage about 3 weeks. Is it acceptable practice or we have to put product into aging machine at the same time? Please help !