A formalin chamber is a controlled environment used to store or preserve biological specimens using formalin (a solution of formaldehyde in water). Formalin is commonly used in laboratories and medical settings because it helps to preserve tissue samples by preventing decomposition and bacterial growth. A formalin chamber is designed to safely contain and manage the fumes and vapors from formalin to protect both the specimens and the people working in the area. Typically, these chambers are equipped with ventilation systems to ensure proper air circulation and to remove harmful fumes. They may also feature adjustable temperature controls to further aid in the preservation process. Formalin chambers are often used in research, pathology labs, and educational institutions for the storage and preservation of anatomical specimens, biological samples, and other materials requiring long-term preservation.