Used Astell Scientific Autoclave, Model U-AVS431D-16559. 316L Stainless steel chamber approximate 26" x 26" x 39" deep, volume 431 liters, internal rated 2.88 bar (41.8 psi) at 143 degrees C (289.4 F), 304 stainless steel jacket rated 2.88 bar (41.8 psi) at 143 degrees C (289.4 F). Serial# PDN40388, built 2014. Certified by Biotechnik, National Board# 219, serial# 8987, year 2014.