{"id":9948,"date":"2020-03-18T17:25:44","date_gmt":"2020-03-18T09:25:44","guid":{"rendered":"https:\/\/smartairfilters.com\/?p=9948"},"modified":"2023-12-23T01:32:33","modified_gmt":"2023-12-22T17:32:33","slug":"washing-masks-effective-virus","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/en\/blog\/washing-masks-effective-virus\/","title":{"rendered":"Is Washing Masks Effective After Virus Exposure?"},"content":{"rendered":"

With the shortage of masks<\/a> during the coronavirus outbreak, many people are wondering if washing masks is an effective way of cleaning and re-using masks.<\/p>\n

\"Washing<\/p>\n

There are companies that claim to have washable anti-pollution masks. This company in India claims to have washable masks washable and can capture air pollution, bacteria, and “germs.”<\/p>\n

\"washable<\/p>\n

Yet one thing that seems to be lacking is any actual data on this question\u2013until now.<\/p>\n

\"N95<\/p>\n

The Test: Washing Masks with Soap & Water<\/h2>\n

Smart Air engineer Paddy tested this by washing a dirty 3M N95 mask he had been using during the coronavirus outbreak.<\/p>\n

Step 1:\u00a0<\/strong>Use a Met One GT-521<\/a> laser particle counter to test what percentage of tiny 0.3 micron particles the mask filters.<\/p>\n

\"N95<\/p>\n

Read more:<\/strong> Here’s why these\u00a00.3 micron particles<\/a> are they key for mask effectiveness.<\/p>\n

Step 2:<\/strong> Wash in soap and water. Smart Air used\u00a0Walch hand soap, which claims to remove 99.9% of bacteria, although it doesn’t say how effective it is at removing viruses.<\/p>\n

Step 3:<\/strong> After drying overnight, test mask particle capture again.<\/p>\n

\"Washing<\/p>\n

Testing Mask Filtration Effectiveness<\/h2>\n

Although Paddy had worn the mask for over a week, it still captured 99% of particles. This fits with previous Smart Air tests that found masks retained effectiveness nearly unaffected after being worn 11 days<\/a>, 20 days, and even\u00a030 days<\/a>.<\/p>\n

However, washing the mask was much worse than natural “aging.” Washing decreased particle capture by 21%.<\/p>\n

\"Washing<\/p>\n

That is still better than the effectiveness of some surgical masks<\/a>, but it\u2019s a large drop.<\/p>\n

Why Is Washing Masks So Harmful?<\/h2>\n

The answer to this question lies in the fibers companies use to make masks. To make N95 and other pollution masks, most companies use a mat of randomly aligned, very thin fibers.<\/p>\n

\"N95<\/p>\n

Manufacturers then give these sheets an electrostatic charge.<\/p>\n

See More:<\/strong> 3M explains static charge in masks in this video.<\/p>\n

\nhttps:\/\/multimedia.3m.com\/mws\/media\/989808O\/advanced-electret-media-enhances-breathability.mp4<\/a><\/video><\/div>\n

Washing removes that static electric charge, which decreases performance. Vigorous washing may also\u00a0damage the fibers, making it easier for particles to pass through.<\/p>\n

Why Do Some Companies Claim to Have Washable Masks?<\/h2>\n

Companies might not know that washing mask filter media can drastically reduce effectiveness. Or maybe the companies that claim to have washable masks know they aren\u2019t actually N95 standard masks. For example, maybe they’re selling simple cotton masks that resist the damage of washing better, but are far less effective to begin with.<\/p>\n

Another common type of “washable” masks use a washable cotton mask and a non-washable N95 filter.<\/p>\n

\"Washable<\/p>\n

Yet this filter still isn’t washable. What’s more, masks with replaceable filters tend to score worse on fit tests<\/a> than 3M N95 masks. That pattern is clear in\u00a0mask fit tests<\/a> run by Beijing-based doctor Richard Saint Cyr.<\/p>\n

\"\"<\/p>\n

Is Washing Masks with Alcohol Effective?<\/h2>\n

Perhaps another solution for washing masks is alcohol. If soap and water require rubbing, maybe alcohol will do less harm because it can disinfect without rubbing.<\/p>\n

A group of researchers at the National Institute for Occupational Safety and Health tested\u00a0N95 masks<\/a> before and after dipping them in rubbing alcohol.\u00a0After drying overnight, the masks captured 37% less particulate on average.<\/p>\n

\"Disinfecting<\/p>\n

To be fair, this test exaggerates the harm. That’s because the researchers reported results for particle sizes most likely to “suffer” from alcohol treatment. Many masks capture particles in the range around 0.3 microns using fibers with static charge. Dipping in alcohol removes this charge<\/a>.<\/p>\n

However, when the researchers looked at even smaller particles, they found out alcohol sterilization did much less harm.<\/p>\n

\"\"<\/p>\n

Read more:\u00a0<\/strong>This is why<\/a> the graph above makes no intuitive sense but is real.<\/p>\n

Bottom Line<\/div>
Bottom Line:<\/div>
<\/span><\/p>\n

Washing N95 masks with soap and water or alcohol decreases particle capture effectiveness. <\/div>

Smart Air<\/div><\/div>\u00a0<\/span><\/p>\n

Looking for an effective way of cleaning your mask from viruses?<\/h3>\n

This method kills viruses without affecting mask performance<\/a>.<\/p>\n\n\n

\n\n\n\n

WHAT NEXT?<\/h2>\n\n\n\n

Along with wearing masks, air purifiers with HEPA filters are also one of the best ways to stay safe from a variety of pollutants in our air including viruses and dangerous PM2.5. A recent CDC study confirmed significantly lower COVID-19 infection rates in schools<\/a> that used HEPA air purifiers. HEPA filters can significantly lower the risk of a variety of deadly diseases<\/strong> including diabetes, heart disease, cancer, and high blood pressure.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

Read More: Four Steps to Choosing the Best Air Purifier<\/a><\/p>\n\n\n\n

Smart Air is a certified B Corp committed to combating the myths big companies use to inflate the price of clean air.<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

Experience breathing truly clean air<\/strong> with gimmick-free, effective air purifiers that won’t break the bank. Join the clean air movement.<\/p>\n\n\n

\n
\"Sqair<\/a><\/figure><\/div>\n\n
\n\nCheck out the Sqair!<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"

With the shortage of masks during the coronavirus outbreak, many people are wondering if washing masks is an effective way of cleaning and re-using masks. There are companies that claim to have washable anti-pollution masks. This company in India claims to have washable masks washable and can capture air pollution, … <\/p>\n

Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":9955,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[469,187],"tags":[487,330,437,232],"class_list":["post-9948","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-coronavirus","category-masks","tag-covid-19","tag-mask","tag-n95","tag-wash","resize-featured-image"],"acf":[],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/9948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/comments?post=9948"}],"version-history":[{"count":29,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/9948\/revisions"}],"predecessor-version":[{"id":28552,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/9948\/revisions\/28552"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media\/9955"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media?parent=9948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/categories?post=9948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/tags?post=9948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}