Covid-19 Products

Negative Pressure Unit is an isolation technique used in hospitals and medical centers to prevent cross-contamination from room to room. It includes a ventilation that generates "negative pressure" (pressure lower than of the surroundings) to allow air to flow into the isolation room but not escape from the room, as air will naturally flow from areas with higher pressure to areas with lower pressure, thereby preventing contaminated air from escaping the room. This technique is used to isolate patients with airborne contagious diseases such as: tuberculosis, measles, chickenpox, Severe Acute Respiratory Syndrome (SARS-CoV), Middle East Respiratory Syndrome (MERS-CoV), influenza (flu), and Coronavirus disease 2019 (COVID-19).

Negative pressure is generated and maintained by a ventilation system that removes more air from the room than air is allowed into the room. Air is allowed into the room through a gap under the door (typically about one half-inch high). Except for this gap, the room should be as airtight as possible, allowing no air in through cracks and gaps, such as those around windows, light fixtures and electrical outlets. Leakage from these sources can compromise or eliminate room negative pressure.

Because generally there are components of the exhausted air such as chemical contaminants, microorganisms, or radioactive isotopes that would be unacceptable to release into the surrounding outdoor environment the air outlet must, at a minimum, be located such that it will not expose people or other occupied spaces. Commonly it is exhausted out the roof of the building after being filterd by Hepa and decontaminated by UV ligting.

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