- Hot-air sterilisers are devices which eliminate or reduce the number of pathogens on materials and objects through the use of dry heat.
- Steam sterilisers or autoclaves are devices which use gas and pressure-tight vessels for the sterilisation of materials with steam using the overpressure method.
Two different processes are used for this:
- The vacuum process – air is removed by means of repeated evacuation (pumping out) alternated with the admission of steam; known as fractionated pre-vacuum
- The flow or gravitation process – air is displaced by saturated steam
Used autoclaves and used sterilisers you can find here.