Data shows that improving indoor ventilation can reduce the risk of virus transmission, and is recommended by the CDC. But to what level of ventilation is ‘acceptable’ or ‘safe’. How much should it be increased by? In this article, we’ll cover the recommended ventilation rates for offices, homes, schools and hospitals. Recommended Room Ventilation Rates […]
Author: Paddy Robertson
Paddy is the CEO of Smart Air, running operations from Beijing. He has a Masters in aeronautical engineering from Bristol University, UK having specialised in aerodynamics. An advocate for open data, free information and transparent business, he spends his spare time promoting honest business and social enterprise.
How to Increase the Dose Your UV Light Can Deliver
In the other article‘Common UV Lights Aren’t Great at Killing COVID-19’, we explained how much doses do we need to kill coronavirus. Also, we talked about how UV-C light kills the virus. Also, the UV light we can find in the market is too weak to kill the coronavirus. So, if we can’t purchase super […]
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 light has the shortest wavelength, […]
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 little evidence directly linking good […]
The Riskiest Environment for COVID-19 is Right in Front of You
Cases analysis data from China suggests that by far the riskiest environment for COVID-19 is where most people are right now. We probed the data on where the riskiest places are to catch COVID-19 and where should we be taking the most caution. People have jumped on practical solutions like washing hands and […]
Are Polypropylene Bags Effective as DIY Face Masks for COVID-19?
In the rush to make homemade masks, many people are wondering whether non-woven polypropylene bags are effective at filtering viruses. These bags are incredibly popular in places like Asia and Africa, where they are a common alternative to flimsy plastic shopping bags. Why Non-Woven Polypropylene Bags Make Great Homemade Masks These shopping bags […]
How Dental Clinics Can Protect Against COVID-19
Dental clinics may be high-risk places for COVID-19 infection. During a dental operation or surgery, patients must remove their mask, and airborne particles and aerosols post a risk of contamination and infection. This article covers masks and air purifiers as possible means of reducing virus transmission for dentists and dental clinic workers. The […]
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 to Meet Mask Demand […]
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. Many people are currently looking […]
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 certify N95 and KN95 masks. […]
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