When sourcing an autoclave, you must prioritize Chamber Material, typically 304 or 316L Stainless Steel, to ensure corrosion resistance against high-pressure steam. Pay close attention to the Sterilization Cycle Types: Class B (Triple Pre-vacuum) is essential for porous loads and hollow instruments, while Class N is suitable only for solid, unpwrapped items. Additionally, verify the Pressure Vessel Rating and ensure the unit features Automatic Over-pressure Protection and Safety Interlocks that prevent the door from opening until the chamber is fully depressurized.