package system for a powdery , granular , paste - like or liquid sterile product comprising a plastic outer tray and a plastic inner tray . the inner tray is to be sealed with a first plastic cover to form a sterile receptacle for the sterile product . the outer tray is to be sealed with a second plastic cover to form a sterile receptacle for the inner tray . the inner tray has a spout for the application of the sterile product .