Abstract: An immersion treatment system for treating items, comprising a shipping container, a treatment tank insertable in the shipping container and defining a treatment chamber, an item-receiving receptacle displaceable between a loading/unloading configuration where the item-receiving receptacle extends outside the treatment chamber and a treatment configuration where the item-receiving receptacle is positioned in the treatment chamber, and a lift at least partially insertable in the shipping container and including a receptacle connector assembly. The treatment chamber is being adapted to receive a treatment solution. The item-receiving receptacle is being engageable with the receptacle connector assembly and translatable between the loading/unloading configuration and the treatment configuration. A method for treating items by immersion is also described.