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Medical/Dental Catalog
TB Controls
Room Pressurization
UV Kill Dosages
UV Light Required ??
Models 500 & 950
Model 625
Model 850P.2
Model XJ-2 Hepa/XJ-1000

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Look for links to printable pdf  literature in equipment specifications sections, above in this column, & on site map.

Friedrich electronic air cleaners - Authorized Dealer - Berriman.com

iaq design for hospital &
understanding pharmacy clean room designs

(Refer to: "Guidelines for Design and Construction of Health Care Facilities", 2006, American Institute of Architects)

HEPA & Ultraviolet (UVGI)
Air Treatment Systems for
Hospital, Medical, & Dental Applications

  • Function: Used for positive & negative pressure isolation infection control in hospitals & medical facilities, or any place where there is a high risk of infectious bacteria/disease. 

    Also: Click Here for Chemical, Biological, Radiological (CBR) threats (chapter 5)

  • Air Purifier Models: (Click Here for Printable Hospital, Medical, Dental Catalog)

  • Creating Positive or Negative Pressure Isolation Rooms for hospitals or medical facilities

  • Room Differential Pressure Monitoors for ensuring negative and positive pressure isolation rooms

  • Technology:  Ultraviolet Germicidal Irradiation (UVGI) and HEPA filtration

    • High Efficiency Particulate Air Filters (HEPA): HEPA filters were developed during WWI as a means of protecting soldiers against chemical warfare. particles and dispersoids.gif (202102 bytes)Since then, they have been the primary mechanism used for removing airborne pathogens, microorganisms, and particles from the air at very high efficiencies. HEPA filters are 99.97% efficient on particles of 0.3 microns or larger. Please click on and review the graphic to the right ("Characteristics of Particles and Particle Dispersoids") showing the diameters of various particles. (The chart may take a minute or two to display.) Notice that viruses are much smaller than 0.3 microns.  Every true HEPA is certified by a testing body using a DOP test, whereby uniform 0.3 micron particles are sent through the filter to test the efficiency.  HEPA filters have been the standard filtering means for clean rooms in the medical and industrial markets. Sizes of airborne pathogens are available from Penn State University

    • Ultraviolet Germicidal Irradiation (UVGI): UVGI has also been used as a means of destroying airborne bacteria and disease, as airborne microorganisms have been shown to be destroyed when subjected to certain levels of UV radiation. One important aspect of this is that viruses, which are very susceptible to UVGI, cannot be trapped by media filters because they are too small in size, so that one of the only ways of eliminating viruses is by UVGI. Furthermore, unlike our Air Treatment Systems, most UV systems on the market today do not create a high UV dosage, so that they cannot destroy airborne bacteria and viruses, as their goal is to simply keep filters/coils free from mold and bacteria growth. Please review the data showing dosage of UV-C necessary for complete destruction of various airborne pathogens.

    • Making a case against UVGI: UV Light is not required


  • Applications:  Medical facilities in operating rooms, isolation rooms (where they hold contagious patients with TB, Hepatitis, etc..), Intensive Care Units, examination rooms, Emergency Rooms, bronchoscopy/sputum rooms, waiting areas (for Emergency Rooms and General Practice areas), doctor’s offices. Also used in laboratories, (tissue culture or other high-risk labs), homeless shelters, AIDS clinics, or anywhere there is a risk of airborne disease and bacteria.
  • Recommended ACH: 12 ACH
  • Features/Advantages:

    • Compliance with CDC and OSHA Guidelines: the technology used in our units is recommended by the Center for Disease Control (CDC) for control of Tuberculosis and other infectious bacteria, so that facilities using our units will comply with CDC and OSHA standards.

    • Ease of Maintenance: Filters and lamps can be easily and quickly changed. Filters used are standard sizes, and therefore are much lower in price than competitive units.

    Click Here for more information

Worldwide Supplier of Air Purifiers, Air Cleaners, Air Filters, Dust Collectors, & Mist Collectors shipping from North America. 
Many, but not all models are displayed.  Air Purifiers are available with a variety of electrical options to meet the power standards of most countries.

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