What is UV light and how does it kill virus

What is UV Light and How Does it Kill Viruses?

UV light, or ‘ultraviolet light’, is a form of non-visible electromagnetic light. The main source of UV is the sun. There are three types of UV light: UV-A, UV-B, and UV-C. They’re differentiated by the wavelength of the light, with UV-A light has the largest wavelength, ranging from 315-400nm. UV-C … Read more

Poor ventilation leads to increased virus transmission covid19 coronavirus offices schools

Poor Ventilation May Lead to Higher Virus Infection Rates

Offices and the workplace can be breeding grounds for viruses such as COVID-19. In this article, we’ll present data that shows how improving office ventilation and airflow may lower the spread of viruses like the coronavirus in the workplace. Evidence of how Office Ventilation Affects Disease and Virus Transmission There’s … Read more

Half of Masks Failed N95 Tests and are not Reliable

Half of Chinese N95 Masks Fail Quality Checks

Tests of masks marketed as N95 from 21 manufacturers show that half of Chinese N95 masks fail quality tests–with some masks filtering no better than a cotton cloth. These tests come at a time that many countries around the world are scrambling for masks and other PPE. Factories Spring Up … Read more

How to Source Reliable and Tested N95 KN95 Masks

How to Find Reliable N95 Mask Suppliers

After testing 31 masks from 19 suppliers in China, we discovered that almost half of the masks were not meeting the N95 standards for filtering particles. What’s more, out of the 17 masks that did meet the N95 standard, most of these broke when we tried some simple structural tests. … Read more

Testing China KN95 & N95 Masks – Supplemental Data

This article accompanies our article on the reliability of KN95 masks being produced in China during the COVID-19 pandemic. It covers our testing method and provides the original data. China N95 Masks – Test Method During our mask tests, we followed as closely as possible the testing method used to … Read more

Can Plants Filter Out PM2.5 Air Pollution From Our Homes?

Can plants be useful substitutes for air purifiers? Data shows that plants aren’t great at removing VOCs from the air. Despite a NASA study showing that some plants like ivy, spider plants, aloe vera and bamboo palm could reduce VOC levels, real-home data shows otherwise. But how well can plants … Read more

Are HEPA Filters Harmful to Health

Are Fibers From HEPA Filters Harmful to Health?

HEPA filters have caused controversy over concerns that they might shed tiny fibers and be harmful to health. But the latest scientific studies have shown HEPA filters are safe and found no evidence of harm. Possible shedding fibers have made some people afraid of HEPA filters and question “are HEPA … Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.