Abstract: A mixing tank and filtration system for operating room use. The tank is utilized for mixing a cement that is employed in reconstructing joints such as the hip joint, and mixing must take place in the operating room because the cement sets up in a very short time. The only presently approved cement gives off toxic fumes during the mixing which fumes frequently have a detrimental effect on the patient and operating room personnel. The mixing tank and filtration system disclosed herein are constructed and arranged to contain and draw off the toxic fumes whereby the detrimental effects on personnel are eliminated.