A sterile device in which an orthopaedic cement dispenser is intended to be placed to maintain the sterility of the dispenser and its contents (orthopaedic cement) when it is taken out of the sterile field to be mixed by an automatic mixer during a surgical procedure. It is typically made of plastic material and designed to be passed by operating staff from the sterile field to staff who may not be sterile, and back again, without compromising the sterility of its contents. This is a single-use device.