Common indoor air pollutants include a wide variety of particulate matter (PM) and gaseous contaminants. Airborne PM ranges in size from a few nanometers (nm) to tens of micrometers (μm) and is composed of both biological and non-biological matter. Indoor particles are commonly categorized into coarse particles (PM10) at 10 μm to 2.5 μm diameter, […]
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Application of air-cleaning devices may be a useful strategy to reduce airborne transmission risks in poorly ventilated spaces (medium confidence). Air cleaning devices have limited benefit in spaces that are already adequately ventilated, and are not necessary for adequately ventilated buildings unless there are identified specific risks (medium confidence). Air cleaning devices are not a
A global shortage of respirators (e.g., N95 and N100) and surgical masks has led the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC) to recommend conservation and, when necessary, the reuse of respiratory personal protective equipment (PPE in response to the COVID-19 (SARS-CoV-2) surge. As a last resort, homemade masks
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Protect Yourself • The SARS-CoV2 virus is much more likely to be spread as respiratory droplets than through contaminated objects and surfaces • Practice good hand hygiene • Wash hands preferably with soap and water for at least 20 seconds before touching your face, eyes, or respirator; use a hand sanitizer with at least 60% ethanol or 70% isopropanol when unable
Decontamination Best Practices: Taking Care of You Read More »
Equipment • Check instructions for proper cleaning procedures • Wear disposable clean gloves • If soiled, first clean surfaces with approved cleaner (soap and water, for example) • Diluted bleach or at least 70% isopropyl alcohol is appropriate for many non-porous surfaces – Dilute household bleach to about 2% (4 teaspoons per quart (4 cups) of tap water) – Ensure
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Cleaning procedures: • Check labeled instructions for proper cleaning procedures • Wear disposable clean gloves • If soiled, first clean surfaces with approved cleaner (soap and water, for example) • Apply a disinfectant to kill the virus, the surface must stay wet for the entire time on the label, this may require up to 10 minutes for some products •
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We conducted a series of experiments to evaluate the gas and particle removal effectiveness and potential for byproduct formation resulting from the operation of a commercially available in-duct bipolar ionization device. Laboratory tests were conducted with the ionizer installed in a small air handler serving a large semi-furnished chamber. Chamber experiments were conducted under normal
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