Negative Pressure: Air flows into the chamber and is then filtered, preventing germs from escaping. The chamber maintains a negative pressure environment (often reaching -15 Pa within two minutes), ensuring that contaminated air cannot leak out.

HEPA Filtration: Removes over 99.999% of airborne particles, including viruses, from exhaust air. It uses high-efficiency particulate air (HEPA) filters (typically 99.99% to 99.999% efficiency for 0.3μm particles) to purify the air before it is exhausted or supplemented back into the chamber.

Portable & Collapsible: Made from durable, lightweight materials (like TPU film) with aluminum supports, allowing quick setup for transport.

Integrated Access Portals / Glove Ports: Allows medical personnel to interact with the patient (e.g., for infusions, examinations) without breaking containment. Most chambers feature multiple integrated glove portals (often 10) on the sides, allowing healthcare workers to perform nursing tasks and medical procedures without breaking the seal.

Utility Ports: Specialized ports allow for the insertion of IV infusions, oxygen lines, and other medical equipment.

Portability: These units are typically made of durable, transparent materials like TPU (Thermoplastic Polyurethane) and are designed to be fully collapsible and easily mounted onto a standard medical stretcher.

Safety Alarms: Many models include audio and visual alarms that trigger if the internal negative pressure falls or if the battery power is low.