GermBuster Air Surface Disinfection Unit (ASDU)

Product Use


The Air Surface Disinfection Unit (ASDU) will produce a high level of disinfection on all surfaces exposed to the Far-UV Sterilray™ lamp and will destroy airborne virus in the room in less than one second. The 222nm lamps emits 10 to the 15th power photons per cm2 per second. (30,000 times the number of trees on earth). It only takes one photon to destroy a covid virus floating in the air. The Far-UV Sterilray™ ASDU ceiling mount fixture design has been carefully conceived to provide direct high-level disinfection for air or surfaces in occupied rooms. The ASDU can be set on a power level to fall below the FDA Threshold Limit Value (TLV) for human exposure.  The Air Surface Disinfection Unit is ideally suited for higher nightly disinfection of surfaces on high power and can also provide disinfection between room occupation throughout the day.




Far-UV Sterilray™ Technology is up to 1,000 times more effective than germicidal UV-C.

The ASDU’s very high photon energy actually breaks and destroys the outer membrane and protein molecules of microorganisms, whereas UV-C only deactivates replication.

The higher photon energy of Far-UV Sterilray™ 222nm photons makes almost instantaneous destruction of airborne virus possible.


  • Rotating lamp and power supply reduce the need for multiple units.
  • 30,000 hour lamp life warranty
  • Dry, chemical-free disinfection.
  • Green Clean-environmentally friendly.
  • Instant off with motion detectors.
  • No mercury or other dangerous materials in the lamp.
  • No labor required; operation controlled by room switch (delay timer).
  • Produces high-level disinfection of room air and exposed surfaces.
  • Destroys surface pathogens (MRSA, C.Difficile, VRE) that routinely compromise healthcare environment.
  • Far-UV Sterilray™ produces up to 1000 times greater destruction than any other UV sources.
  • Level of disinfection proportional to run time; 7 hours produces >6 log kill on floor level surfaces. (250 watt version)
  • Provides a high level of disinfection between room occupancy during the day and total disinfection each night.
  • Uses Far-UV Sterilray™ that is being tested for safe use on skin as opposed to UVC which can cause erythema.
  • Center of Room Ceiling Mount.
  • Kills airborne microbes in <0 . 2 seconds of exposure.
  • Kills any microbes on exposed surfaces in the room facing towards the ASDU.
  • Reduces installation costs: ONE unit per room is usually sufficient.


  • Comfort in knowing that pathogen removal has occurred in a convenient process 365 days/year.
  • Increased confidence that germs are being reduced proactively whenever the ASDU is in use.
  • Quick, high-level disinfection of room air and all exposed objects with the flick of a switch.
  • Can be used each night for maximum disinfection or during the day to achieve a high level of disinfection between room occupation.
  • Reduces HAl’s and SSI’s cases saving cost associated with patient care expenses.
  • Supports a comprehensive decontamination approach and improves or complements existing manual application methods for cleaning.


  • Emergency rooms.
  • Decontamination rooms.
  • High-Risk patient rooms.
  • Critical use restrooms.
  • Critical care rooms that need routine but assurance of high-level disinfection of air and surfaces.
  • Critical care rooms used with contact patients.
  • Any health care rooms that need assurance of a very high level of disinfection of microorganisms between each day’s use.

While not meant to replace existing cleaning protocols, ceiling-mounted Sterilray’s ASDU devices can help support a comprehensive decontamination approach and improve or complement existing manual application methods for cleaning and disinfection.  Recent studies suggest that Far-UV Sterilray™ disinfection may be more effective when used after traditional cleaning protocols.