Nexcare Nexcare All Purpose Mask

This mask does not appear to be "N anything". Amazon's product description states:

"99% filter efficiency against ragweed pollen"

"filters out 99% of wearer's exhaled airborne bacteria"

One might think this mask meets the NIOSH "N99" requirements. It apparently doesn't even come close. The box shown in the Amazon description does not match what was actually shipped in November 2011. The front of my box states, "Filters out > 95% of wearer's exhaled airborne bacteria" and "Helps reduce exposure to household dust, ragweed pollen and yard dusts". There is no NIOSH "N" designation anywhere on the packaging, and the masks' performance criteria certainly appear to be below that advertised.

I bought these masks to use when exposed to allergens like dust, or oven cleaners or weeds. In particular, I had been helping a friend take care of a pet coop (chickens) and the straw (or the chickens) gave me a sore throat. These little masks made a big difference. I can certainly recommend them.

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From cleaning the batroom with abrasive agents with strong vapors, to groming my cats, they are just perfect, light and comfortable when on

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Don't bother. I you want these to block out any air pollutants or allergens, they are a waste of money. They do not provide any seal, the elastic is flimsy and breaks easily. I used one and thru the rest away

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We use these masks for cleaning the basement and doing yard work or for anything else we do where we don't want to breathe in dust. They work great. I feel they are a must have to prevent breathing in dust or pollen when working for long stretches raking leaves, sweeping outdoors or cleaning dusty areas.