Previous discussion [forums.macresource.com]

At $31.71 price point, they are a bit more than other masks but there is less uncertainty on if they are fake N95 masks. These are NIOSH approved masks.
[www.amazon.com]

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Ways to improve web conference image and sound quality. [forums.macresource.com]






Edited 2 time(s). Last edit at 12/22/2021 03:15PM by pRICE cUBE.

25 Single Use N95 per Box


What constitutes a single use?

One day? Or maybe (if you're careful) used occasionally over a few days?

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Northern California Coast

Quote
steve...
25 Single Use N95 per Box


What constitutes a single use?

One day? Or maybe (if you're careful) used occasionally over a few days?

I have no idea. I use mine for about 2 weeks around various people of uncertain vaccination status indoors on a regular basis. I also put a cloth mask on top as more of a coarse particulate filter.

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Ways to improve web conference image and sound quality. [forums.macresource.com]

They arent over the ear, if that matters.

Technically for these masks to be effective as they state, they need to be fitted.

From long ago, I read that most of these masks are at the "effective rate" for 8 hours of continued use.

These seem like overkill for casual use, or use in a low % environment.

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Edited 999 time(s). Last edit at 12:08PM by jdc.

apropos of my other post on the straps of masks, these would be a bit more difficult to reattach if they broke, as the 3M I mention have a staple connection and, in theory at least, can be re-stapled. These, you would have to break out the hot glue gun to fix, and I have done that for some masks.

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Hurts like a bastid...

I have read several places that it’s best to rotate masks so they have a chance to fully dry out between uses.

"What constitutes a single use? "


Inhale......


Exhale.....


Single use achieved.......

I have read several places that it’s best to rotate masks so they have a chance to fully dry out between uses.


I agree.

I think the single use categorization is just stander for this all-cloth type of mask, before filtering for COVID was a deal, and masks were cheap and plentiful.

Under those conditions, single use was economical for the user and profitable for the seller.

Additionally, there may have been the assumption of wear and tear which would compromise integrity and effectiveness.

But these are not those times.

I got two boxes of the IFM masks last time pRICE mentioned them, and they were $20 a box then.

As it is, I have a whole collection of various masks from various surgical types, cloth masks, and N95 masks.

Two boxes of N95s are on the way and I don't even remember what brand.

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N95 certification levels are based on an assumed 8 hour workday wearing the mask for protection from airborne particulates generated in an industrial or medical environment. The mask if fitted properly can be assumed to keep 95% of the particles in the tested size range out over that period. A single use is an 8-hour workday. If you only wear a mask for 1/2 hour each day then you would have a minimum of 16 days of use assuming that you store it properly. Also, since you are apt to be primarily wearing it when you are not doing physical work in a particulate-rich environment, then you can expect that the mask would remain effective for much longer. So, for most people who are not using these all day or around a lot of particulate sources you should be able to use these for much longer than a day.

Also note that N95 certification does not allow masks with ear loops because those are difficult to fit tightly (though you can address this problem with strap-tightener accessories (or paper clamps or tying knots). Only KN95 and uncertified masks allow ear loops.

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"In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion." (1987) -- Carl Sagan



Edited 1 time(s). Last edit at 12/22/2021 08:01PM by davester.

I only use one at the most 4-5 in a day. Then I let it rest 3-4 days.

You can put them in a dry instant pot for 45 minutes and they are good as new.

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“No persons are more frequently wrong, than those who will not admit they are wrong.” -- François de La Rochefoucauld

"Those who cannot accept the past are condemned to revise it." -- Geo. Mathias

The German word for contraceptive is “Schwangerschaftsverhütungsmittel”. By the time you finished saying that, it’s too late

I noticed a number of mask seller on AMZ seemed to be targeted by bogus comments for some >>gobuy<< site selling KN masks.

Looks like it'll be awhile before AMZ does anything about that, if ever.

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I am that Masked Man.

All you can do, is all you can do.

There’s trouble — it's time to play the sound of my people.

Your boos mean nothing to me, I've seen what you cheer for.

Insisting on your rights without acknowledging your responsibilities isn’t freedom, it’s adolescence.

I've been to the edge of the map, and there be monsters.

We are a government of laws, not men.

Everybody counts or nobody counts.

When a good man is hurt,
all who would be called good
must suffer with him.

You and I have memories longer than the road that stretches out ahead.

There is no safety for honest men except
by believing all possible evil of evil men.

We don’t do focus groups. They just ensure that you don’t offend anyone, and produce bland inoffensive products. —Sir Jonathan Ive

An armed society is a polite society.
And hope is a lousy defense.

You make me pull, I'll put you down.

I *love* SIGs. It's Glocks I hate.