Ethylene Oxide Sterilization Unit including ETO gas sterilization chamber has been specially designed for sterilization of products sensitive to high temperature and to humidity (Syringes, Defluxers, Catheters, Cartridges for Dialysis, Plastic articles, Bandages, Sutures etc.). Sterilizer can be uses even for sterilization of powders which deteriorate by heating exposure. For the wide range of product that can be treated, such sterilizer find application in Disposable Surgical Products, Para Pharmaceutical and Pharmaceutical Industry, Laboratories, Hospital and Food Processing Industries.