STE-TIN, 16 Liter Vacuum Autoclave STE-18L, 18 Liter Autoclave STE-23L, 23 Liter Autoclaves STE-TIN-23T Documentation: 1. Printer: an external printer is optional. 2. USB port: it is used for connecting a USB stick, all sterilization data are automatically written in the USB stick and can be read directly in any PC and stored electronically. 3.