An apparatus and method for sterilization of an article which has a first open end, a second open end and a lumen extending therebetween. The apparatus comprises a first chamber for receiving the article. The first chamber has an outlet fluidly connectable to a pump for adjusting an internal pressure in the first chamber and an inlet fluidly connectable to a sterilant source for supplying sterilant to the first chamber. The apparatus includes a second chamber fluidly connectable to the first chamber by a chamber connector fluidly sealable to isolate the first and the second chamber and an article connector for fluidly connecting the second open end of the article to the second chamber to form a fluid path from the first to the second chamber through the lumen. Also included is an article connector for connecting an open end of an article to be sterilized to a sterilization apparatus.