You are here:
Environmental Technology Verification: Supplement to Test/QA Plan for Biological and Aerosol Testing of General Ventilation Air Cleaners; Bioaerosol Inactivation Efficiency by HVAC In-Duct Ultraviolet Light Air Cleaners
Citation:
Research Triangle Institute. Environmental Technology Verification: Supplement to Test/QA Plan for Biological and Aerosol Testing of General Ventilation Air Cleaners; Bioaerosol Inactivation Efficiency by HVAC In-Duct Ultraviolet Light Air Cleaners. EPA/600/R-08/133, 2007.
Impact/Purpose:
ETV Test-QA document
Description:
The Air Pollution Control Technology Verification Center has selected general ventilation air cleaners as a technology area. The Generic Verification Protocol for Biological and Aerosol Testing of General Ventilation Air Cleaners is on the Environmental Technology Verification website. This document supplements the Test/QA Plan for Biological and Aerosol Testing of General Ventilation Air Cleaners that corresponds to the generic protocol. The supplement describes the test and quality assurance procedures that will be used to evaluate the performance of in-duct ultraviolet (UV)-light air cleaners to inactivate airborne microorganisms from a heating, ventilation and air-conditioning duct under standard test conditions. UV lamps have been used to inactivate airborne microorganisms for many years. Much of the early work was directed at the control of very infectious microorganisms. Wavelengths within the short wave, or C band of UV light (UVC), were found to be the most effective germicidal light wavelength. UVC is generated by electrical discharge through low-pressure mercury vapor enclosed in a glass tube that transmits UVC (primary wavelength of 253.7 nm) light. UVC has been shown to inactivate viruses, mycoplasma, bacteria, and fungi, whether suspended in air or deposited on surfaces.