Micron Size of Viruses

Environmental Filter | March 16th, 2020


In the scientific, engineering, and technical fields, the term micron is used. A microns is a unit of measurement that is equal to one millionth of a meter. Some things that are measured in microns include: a strand of human hair, pollen, bacteria, and even viruses.

Micron Sizes

Unlike a strand of human hair which is approximately 30 microns, we can’t see bacteria or viruses with the human eye. If we look at the chart below, depending the size of the micron, some things are visible to us while others are not. We are no stranger to microns in that we deal with them on a daily basis to make sure our dust collector filters are efficient in dealing with microns of various sizes depending on the application.


Viruses are microscopic pathogens that can be spread from one person to another. One inside a host these pathogens will start to reproduce causing infection and illness to the host.

Bacteria Vs. Viruses

While both of these can cause illness and be spread, there are big differences between the two. Bacteria are microorganisms that are found all around us. Unlike viruses, some bacteria are actually good for you. Probiotics for example are good for digestive health. Antibiotics are used to get rid of bad bacteria such as the ones that cause strep throat and other infections.

Viruses cannot be killed out by antibiotics like bacteria. Most viral infections require antiviral drugs and in some cases have to run their course.

Connection to the Air

We know viruses can be spread from person to person through physical contact. We also know that droplets of viruses (from a cough or sneeze) can not only live on surfaces but can be in the air. For example, if someone sneezes and those droplets dwell in the air. Once you inhale these particles you can become infected. But as human beings we can’t just stop breathing. The air has a lot to do with the spread of airborne viruses. Viruses that are airborne include chicken pox, measles, and the common cold.

As a dust collector filter manufacturer, we are aware that without proper filtration air can be unsafe and harmful to breathe. For example, a welder who inhales toxic weld fumes every day at work can cause health problems. Unlike viruses however, weld fumes can be seen with the human eye. So how do we fight something that we cannot see? Good hygiene is an excellent way to prevent the spread of disease, but what about particles in the air that we breathe in?

HEPA Filtration

The answer may lie in HEPA filtration. HEPA filters are mostly used in hospitals or pharmaceutical companies to create a safer workplace and to protect patients and medical personnel. According to the CDC, HEPA filters are used in airborne infection isolation rooms. (AIIRS) When implemented, these filters will make the air cleaner and safer to prevent the spread of infectious diseases. [1]

Coronavirus - What You Can Do

Recently, there has been a virus that has increased into a pandemic across the globe. The virus originated in China and has spread to other countries. In the past, there have been other outbreaks such as the Ebola outbreak in 2013 and the SARS virus in 2002. There are simple ways to protect yourself from not only the Coronavirus but illnesses like the Flu as well.