JCJZ KN95 Face Mask

Overall Result

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Why did this mask fail?


Video Transcript What's up everybody. We are back in the place where we are testing every single mask on Amazon. And today we are looking at the JZ mask. I don't know if it has anything to do with the wrapper, but it's called the JCJZ. So I'm going to assume it is just so that he'll come after that.

Let's open this up and put it in the test. JCJZ. And then it's got like a little COVID flaps coming around. I love it. Weird model number TB02. I can't open this. I like the over wrap here because it makes me feel like it's clean but you really need scissors to open this up. All right.

Oh wow. Look at this. And then it's sealed on the inside too. Double sealed for your protection. Let's put it in the clamp. Now this is claiming to be a KN95 and I can see right away that it's not. And if you've seen one and a half of these videos that we've done, you're going to know why, but I'll tell all the newcomers.

First, let's talk about this machine. The reason you should be here, not my charming personality. This is a PFE machine particulate filtration efficiency test. What we're doing is shooting tons of salt, NaCl through this mask, testing the filter. And this will give me a filtration efficiency, the 95 in KN95 means 95% filtration. So if this isn't showing 95%, it's not a good mask, but I can already tell you that it's not a KN95 just by looking at the mask.

KN(5 needs to have three things. The manufacturer name, needs to say KN95 and what standard it's held to. So the reason why the standard has the name on there is so these people can't just make up some brand name and shove it in any old box, which is what happened here. Breathability is over 200 though. You really want it to be a below 150. And so this is already not turning out to be a great mask. I'll check the ear loops one at a time. That's great. That's actually really good. Construction's pretty solid on that. The nose wire seems pretty good. I've stretched it out so it fits my face now. It is a little wide. I don't like that as much. It doesn't give me as much room to breathe in here. I'd like a little bit more.

And the smells, it kind of smells like a recently sterilized like operating room or something like that, which is kind of weird. Doesn't make me feel great, but I've smelled worse masks too. But does any of that matter if it doesn't protect you? Again, the 95 in KN95 means what? Say it everybody. 95%. So it's got to be at least 95%. Survey says 99. Great job. 99.015. 99.015. Pretty good mask from a fabric perspective. Breathability is really on the high side. I would choose another mask. Sorry, Jay-Z. These guys who are using your name, they didn't make the best mask in the world.

All right, thank you guys so much for watching. Hope you've enjoyed this. If you ended up not buying this mask because of this review or buying this mask because of this review, give me a like or subscribe or don't. I don't even check. [inaudible 00:03:40] everyone. I'll catch you on the next test. Thank you.


The JCJZ KN95 Face Mask failed because the KN95 standard requires that the mask have the manufacturer’s name and the appropriate technical standard, typically either "GB 2626-2019" or GB-2626-2006,” written across the front of the mask. This is similar to how official N95 masks display NIOSH approval numbers. This mask did not have the required identification on its front. 

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I believe the idea is that if the company can’t be arsed to do something as simple as print the required text, what else did they skimp on that maybe we’re not seeing?

Jarrod September 15, 2022

I believe the idea is that if the company can’t be arsed to do something as simple as print the required text, what else did they skimp on that maybe we’re not seeing?

Jarrod September 15, 2022

Hmm. Well, if it looks like a duck, walks like a duck, and quacks like a duck I would say it’s a KN95. I also agree with Leon. Who cares if it works? People are still getting COVID left and right and most people are no worse for the wear after having it. It’s time we all stop the masking and testing nonsense and move on with our lives. We have vaccines, we have therapeutics, let’s start treating this for what it is, a flu-like illness.

Joe S. July 22, 2022

Very confusing review. The efficiency of 99.1 percent is great, right? So if the mask fits me, it’s a good mask, correct? I don’t understand the problem. It doesn’t fit you so thats’ why you don’t like it? What don’t you like? Just that it’s not a real KN95? Who cares if it works?

Leon Erlanger January 15, 2022

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