Used 1.05 Gallon Autoclave Engineers Zipperclave Stainless Steel Autoclave. 1.05 Gallon (4000 Milliliters), Model Z400SSE1031C122C500421K2111X. Vessel rated 2200 psi at 40 to 450 degrees F. Serial#12150000-2. Built 2012. Includes a Sentinel controller.