A 21-inch formalin chamber is a robust sterilization device used primarily in medical, dental, and laboratory environments for effectively disinfecting surgical instruments and other equipment. This chamber features a larger capacity, allowing for the simultaneous sterilization of multiple or larger tools, making it suitable for high-demand settings. The design includes an airtight container with a removable tray to hold instruments securely, and a designated area for formalin (formaldehyde solution) to generate sterilizing vapors. The formaldehyde gas produced within the sealed chamber effectively eradicates bacteria, viruses, and fungi, providing thorough sterilization without the need for heat or electrical power. This makes the 21-inch formalin chamber an essential tool for ensuring infection control and instrument safety.