Unused 200 liter (Approx. 50 gallons) Working Volume Precision Stainless Stainless Steel Bioreactor Vessel. Internal rated 50PSI/FV @ 350 deg F. Jacket rated 100PSI/FV @ 350 deg F.Interior 12-15Ra, mirror; Exterior ground & polished; 4-baffles; Centered mixer port. (Vessel only - No Agitator)