User Friendly Ethylene Oxide Sterilizer is suitable for sterilization of moisture/ heat sensitive medical devices, equipments and instruments. The Sterilizer can be availed in double door models for clean room applications to maintain sterile chain integrity and can be installed in wall placed on a free standing stick. The Sterilizer is efficient, nicely finished and good sturdiness. The Sterilizer has the feature that aeration is carried out at the end of the cycle inside the chamber itself and material can be easily loaded using the basket provided. The User Friendly Ethylene Oxide Sterilizer has cartridge that is punctured only when proper negative pressure and humidity conditions are achieved in the chamber.