Safest Covid-19 Face Mask: We Found That Not All N95s On Amazon Are Equal | WSJ 

Should have pointed out that those KN95s that were below the standard are still completely superior to cloth or typical surgical masks. VERY IMPORTANT TO POINT OUT

But 88.7% filtration is still way better than a cloth mask.

Even if the KN95s are below quality, they are still far superior to surgical masks and cloth coverings. We're talking 60-80% better protection

They should have filmed this 2 years ago…

Wearing kn95 since the start. Practicing handwashing frequently & social distancing. Avoiding useless contact. Still safe in spite of living in the hotbed NY mid 2020

Only if 3M not charging arm and leg, we will buy it.

I would like to see someone evaluate the comparative effectiveness of masks for people with and without facial hair.

As an essential worker I trusted my KN95 mask to protect me. I spent almost $40 for a box of fake knockoffs. It was one you dissected. How could they continue to sell products they know are not 95% effective ?

surely amazon is responsible for allowing false advertising on it's site. Amazon is making money by selling these false items. Take the Money take the Responsibility!!!

Go Aaron! Great to see your work here.

That's why we need WSJ. and journalism..Thanks...

That host was wearing the 3M aura 9205+ fish style mask that is my favourite comfortable and very effective mask.

I have been wearing N95 masks nonstop since March 2020 and have been shamed and given strange looks countless times. Turns out I was right all along.

Would’ve been better if they also covered KF94 since thats the mask form factor i prefer

Great reporting, thank you!

South Korea's KF94 masks should have been tested as they are the most comfortable, reliable, protective masks available today.

Very informative video. Thank you WSJ!

Um why not TELL us which one to get and give the dang link??? Shing genius, huh?

Is it possible to list the 6 n95 mask that performed well?

The issue here is mask is not just a regular commercial product, it need to be specific regulated who can sell it to assure the product is legit and meet the health requirements

Aero Pro had showed their testing method, which is very different from 4C Air(they also sell masks, are they competitors??) @WSJ

could the filtration efficiency depend on the electrostatically charged layer, and could it be certifiable by a third party

Thank you

ok more than a year later. these masks do work well but it takes a few minutes to form the mask to your face. they start out stiff but you can form them to your face and they are really comfortable for at least an hour unless you're doing some hard labour of course

Excellent! TY!

How about KN95 and cloth mask used at the same time?

I double up on any mask I use 🤷🏼‍♀️

Which particle size are they all using?

So what is stronger the N 95 or the KN 95?

Do you have tips on reusing n95 masks. Can I put them in a bag and use them 30 days later or can the virus still be on them?

if the mask is not your size and there are gaps then none of the filter layers mater.

There's a guy on RU-vid, who's company is Armbrust. His name is Lloyd. He has tested masks sold on Amazon and he continues to test them. His goal is to test every mask Amazon sells. He uses equipment that NIOSH uses to test the masks, obtaining filtration and breathability results, passing or failing them for safety. He also has all of the results on his website, Armbrust. In addition, his company sells the best ones. His company has also designed and received approval to sell KN95 masks, which can provide up to 99*/* filtration.

Just for curiosity: What would offer the most protection? A a fake KN95 or a disposable face mask?

Our superhero : _The Masked Knight_ 😃

Did you wake up from hibernation? This video would be great 2 years ago

No links to the good masks?

For normal person, N95 mask is overkill. A real N95 mask is very uncomfortable to wear. A fake N95 or below standard N95 mask still give far better protection than normal surgical mask which have big gaps on the side and between the nose. The biggest problem is those people who wear cloth mask. They only block 10~20% of particles. Japan already try stop people wearing cloth mask recently, because many research found out cloth mask is almost useless. Yes, I agree Japan is very slow on this compare to other Asia countries, who have experience the SARS pandemic during 2002~2003.

i'm looking for a good looking mask (not too bulky) and also protective. any suggestion?

I have hay fever. I wanna dry trim my cannabis without having a asthma attack. Which mask is optimal for my needs?

Yes N95 can be tough to wear. For the others, One could double mask (surgical plus N95).

n95 mask made and sold by wsj is more equal than other masks

A bit late for this testing and report, don’t you think?

What about KF94 mask?

*I'm not worried about people wearing ANY low quality masks.* I'm more concerned those who don't care about others health and walk around like Covid-19 never happened. 😷😷😷

He sounds like Bane when wearing the mask

N95 masks are very easy to get used to after about three days. At least the 3M 1860 ones I got. They are hard to use while riding a bike and hard to take off. However, it’s not that big of a nuisance while walking around and entering indoor locations such as grocery stores, and I at least feel like I won’t be the catalyst for another person or an entire community’s deteriorating health. I just wish we had more of them in circulation here in Japan.

If politicians can be bought off, so can scientists and bureaucrats. Fauci is a perfect example.

If you really want to do test you should add one that government provided too

KN95 are made in China, N95 are made in the USA. This information is on then 3M website under respirators Note to Korea, Australia, Japan, and Europe all have different designations for the N95 type respirators. Additionally, when fitting the ANY RESPIRATOR to your face there should be no facial hair on your face so as to get a proper fit and to reduce any possibility of respiratory infection.

The price of masks on Amazon is just ridiculous expensive compared to other countries

Interesting to see, there are no FFP2 Masks, which counts in Germany as the best

Great idea but it was a little late. I wonder where all that money went that was supposed to take care of these issues a head of time.

good product

Not professional testing way to use TSI ! Too bad ~

Some links to masks on Amazon would have been helpful.

Where can I get some in a small size? I'm an adult who is immune compromised & have a small face. Regular N95 KF94s are too big

I make my own from my jeans and T shirts.

Can you please put the names

Wheres the mask efficacy information for once it gets moist? From wearing too long....

What would people expect in anyways? High inflation is world-wide problem, therefor rising costs. So firms are producing a better than nothing quality of products, and NIOSH puts its stamp on better than nothing products due to high demand. No one takes responsibility, nor the firms are afraid of the devaluation probability of their firms stock prices. no liability here, because we *have to buy their products*. Avoiding an explanation means acknowledging the fact of the problem.

1:29 *Taiwan

Why is he running Windows 7?

The Wild West, good luck to us

But on a Medical budget it becomes expensive..... What or reusable one's with 2 layers you wash and use???? Save $$$$

If these masks work so well why don't we use them them in paint booths , instead we use respirators?

Would love to see results on a cloth mask, that 90% of the people are wearing.

Better late than never.

I'd never buy it from Amazon, you never know what you get there...

I've had Covid + 2×Moderna + BnT. What type of mask do I need to wear?

se passarmos tanto tempo sem trocar a respiração,respirando particulas de materiais e químicas de tecidos das mascaras o que acontecerá

Come on you at least get masks from authentic retailers for the test….

What's the reporter's name? He's kind of cute.

Collection of masks😂

kf94

Why are you still using Windows 7?. That is an accident waiting to happen

Plot twist - masks do ABSOLUTELY NOTHING to prevent viral transmission.

What's the point, American don't wear mask anyway

What prompted WSJ to think that people living with masks for 2 years would be interested anymore. 😑

If you walk into a grocery store with a mask and can still smell the produce or bakery. Does that mean your mask is ineffective?

Good to know. Covid is still a threat. 🙏🏽

No Face Mask for Corona as I am Living Great@Home and Around SMILE:)

You can see the ACTUAL TESTING (one-cut with results) with our TSI 8130 Automated Filter Tester here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EmkZMph2zf0.html

Questioning the credibility of the test. How can we know the testing method used in this video is the same standard as the NIOSH testing method, what particle size it is and what is the flow rate? Does the testing complies with GLP? Different testing methods will definitely have different results. The N95s placed in the TSI machine are not well placed (headbands are under the AERO PRO N95) and the testing data is not shown directly.....

Narrator: When you drop your voice, it’s very difficult to understand you. Please try to improve diction and keep tone in range easiest to hear and understand.

P100 is da best

I asked my ex-wife to get me several packs of KN95 masks from work which she did. She is a surgical RN at Northwestern Memorial Hospital in Chicago, and yes, we are still friends although I live near the Gulf Coast. I never leave home without one.

Yay mask nerd!

@4:05 - that test is fraud for real world usages. You know anyone with a flat face like that machine? And what they didn't tell you is that just about any n95/kn95/kf94 is much much better than the "surgical" mask.

Any of these masks are better than clothe, procedure, and surgical masks. I can live with any mask that is over 90% effective.

Like the great Future once said, “Fkc it mask off.” 🍾🍾🇺🇸🇺🇸🦅🦅

KN95的标准描述的测试方法应该和N95的美国的标准以及国际标准进行评估和比对。我感觉口罩的形状，很重要。KN95便宜是有原因的，他本身的密封性不如3M的。作为中国人，还会略感尴尬。聊胜于无吧。至于缺乏口罩标准和制造厂商名称的口罩，我感觉大概率是假货。GB 2626-2006已经废止，现行强制标准为GB 2626-2019，供大家参考。

Can you bother to perform statistical tests and provide p-values?

😂😂😂😂😂😂😂😂😂😂😂

LOL they said the review videos do good on youtube and WSJis like masks its it.

I shuddered watching Aaron Collins putting on an N95. His method was grossly improper and could damage the mask and/or prevent a good fit. And by the way, any N95 will underperform if not sized and fitted correctly - and since they come in different sizes and shapes, the fact that one N95 did not perform will on Aaron's face is no indication of it being unsuitable, only that he should try a different size or style.

WSJ didn’t do their research KN95 is a Chinese knock off of KF94 and N95. KN95 is not regulated and is made in China while KF94 is South Korean. I’ll say however, N95s are much better at filtration than KF94 but it’s uncomfortable while the opposite is true for KF94s.

Sadly, Amazon seems to be coming more and more famous for "fake" products in general. KN95s are made in China. (just in case anyone cares) I'm sticking with 3M and purchasing through more trusted outlets rather than Amazon. At the moment prices have not been outrageous.

Only the original 3M N95 is trustworthy...the rest made in China are poor cheap imitations

In 15 days they won't be required here anymore in the Netherlands. So I'll forget they exist 16 days from now. So happy to know I'll never have to think of this again soon!

Well dos it matter now that crona 19 is our Owen immunsystem 😂😂😂