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UVC Microbe Elimination

UVC Basic Principles

Ultraviolet Radiation UV is a part of the electromagnetic spectrum.

UV area is divided into three subareas

  • UVA (long waves) 320 - 400 nanometers (nm)

  • UVB (middle waves) 280 - 320 (nm)

  • UVC (short waves) 100 - 280 (nm) .

The most effective microbe elimination range for UV is within the C bandwith UVC.

UV rays at 240 to 290 nm destroy the DNA structure of microbes eliminating the bacteria, viruses and spores of fungi.

The potentially Pyrogenic (fever producing) particles consisting of the eliminated microbial bodies remain fastened in the filter media and are not spread down stream through the filter.

UVC Germicidal Radiation Energy Dosages  (Ws / m2)


30 - 60


20 - 100

Mold Spore

100 - 1,000

In normal conditions, 15 minutes of UVC radiation is enough for the microbial elimination, using the described UVC solution. To ensure a complete elimination, we recommend that the UVC radiation timer be set at 30 minutes, e.g. two times a day.


Primary results of air sampling upstream (in) and downstream (out) of the filtration unit





Figure: Primary results of air sampling upstream (in) and downstream (out) of VONENBC  filtration unit

a. Aspergillus niger D-81078

b. Penicillium chrysogenum D-96661




Some Potential Bio-Hazards












Laboratory Test Results Available for Our Different Filtration Solutions:

All our filtration technologies have been tested by respected laboratories.


Impartial Laboratory and Field Test Results:


Filtration of Ultra Fine Particles (0.1 μm) - VTT  - The Technical Research Center of Finland (VTT)

-  Filter Quality Comparison: EU6, EU7, EU8, HEPA10, VONENBC , HEPA13, ULPA15 - VTT

Filtration of Microbes, Bacteria and Viruses - VTT

Filtration of Various Chemical Agents and Gases - The Helsinki University of Technology

Filtration of Carbon Dioxide CO2 - The Helsinki University of Technology

-  Measurements of Filtration Efficiencies and Air Flow Rates

-  Allergy House Children's Day Care Center Particle Filtration Efficiency Measurements

-  Tobacco Smoke Filtration Research Report


If you are interested in these or other laboratory test results, please contact us.




More on NBC Filtration:

-  Particle Filtration

-  Microbes & Biological Agent Filtration

-  Gases & Chemical Agent Filtration

-  Carbon Dioxide CO2 Filtration

-  Carbon Monoxide CO Filtration