Does It good for filter pm 2.5?

Technical Data below is from 3M Corporate: Short Answer: 3M N100 Mask filters out 99.97% of particles larger than 0.3-Microns (PM2.5 means 2.5-microns or larger). A 3M N100 Mask works well against cigarette smoke and smog covered cities. Longer Answer: Your concern is with PM2.5. See explanation below: The most harmful pollutant to human health is called PM 2.5, particle matter smaller than 2.5 microns in diameter that's found in soot, smoke, and dust. PM 2.5 is especially dangerous because it can get lodged in the lungs and cause long-term health problems like asthma and chronic lung disease. PM 2.5 starts to become a major health problem when there is more than 35.5 micrograms (µg) of PM 2.5 per cubic meter of air, according to the Environmental Protection Agency. But the World Health Organizations recommends keeping yearly average PM 2.5 levels three times lower than that. The most polluted cities on Earth have anywhere between 11 and 20 times that amount - based on the new WHO data from cities that collect it. Hope this helps... 😁 Sincerely, Jacob SurvivalGeek (YouTube) https://www.youtube.com/channel/UCfRsUPToBXp4ZIre__dJg4A

Is this mask effective against smoke from wildfires (in surrounding cities, not fighting the fire)? How about use while spray painting? Thanks!!

I noticed that when I smell smoke from a wildfire and then put on an N95 I can't smell smoke. So it has some effect. I carry them in my car and when I travel. But - it doesn't work with spray painting. That requires another type of filter. If I spray paint outside I use an N95 and that works if there's a gentle breeze to carry fumes away.

Why is this unit 70% more in cost than the 3M Particulate Respirator 8210V, N95 Looks to be the same thing.

You're absolutely right. You can visit the 3M site where it shows you all model numbers for their protective masks. Model 8511 specifically says on their website that this mask DOES NOT PREVENT VIRUS, GERM PROTECTION. This is a description on one of 3M's sites w/ description of what 8511 which is given category on N95 (this is also not FDA approved). product Code 8511 From 3M website: This respirator can also help reduce inhalation exposures to certain airborne biological particles (examples: mold, Bacillus anthracis, Mycobacterium tuberculosis), but cannot eliminate the risk of contracting infection, illness, or disease Product Color White Product Type Dust and other Particles Recommended Industry Agricultural, Commercial Buildings, Construction, Design & Construction, Food Processing, Food Safety, General Manufacturing, Heavy Infrastructure, Industrial Maintenance, Mining, Oil & Gas, Transportation

Is this mask reusable？

Although mentioned in other responses that it does not filter out certain viruses and bacteria, it is a good mask. Also health authorities do not want you to use this mask as it does not filter out your own exhalations. That being said it was the only mask I had during the early months of the pandemic. And yes, I have used each mask over several times. First after each use let the mask dry out for 24hrs. Second after drying spray the inside and the outside of the mask with 70% alcohol. Let it dry for 24hrs. Then it should be ready to use again. If the mask is dirty or damaged throw it out. It was better than nothing. During the pandemic I social distanced and stayed home only to go our for pharmacy and groceries and washed my hands and clothes. I also would wipe down anything I brought into the home with either an 70% alcohol wipe or Clorox wipe.

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😷 Stay sharp, stay safe — breathe smarter with 3M 8511!

LIGHTWEIGHT DISPOSABLE - Weighing just 141g, designed for convenient single-use without compromising durability.
CUSTOM FIT FOR EVERY FACE - Ergonomic metal nose clip and elastic headband provide a secure, personalized seal.
BULK PACK FOR PROFESSIONALS - Pack of 10 masks keeps your team protected and ready, minimizing downtime.
BREATHE EASY WORK CONFIDENTLY - Cool FlowValve technology reduces heat, moisture, and fogging for all-day comfort.
CERTIFIED PROTECTION YOU CAN TRUST - Meets 42 CFR 84 standards ensuring reliable N95 particulate filtration.

The 3M 8511 Disposable Respirator is a professional-grade N95 mask featuring a Cool FlowValve to reduce heat and moisture buildup, an adjustable metal nose clip for a secure fit, and elastic headbands for comfort. Certified under 42 CFR 84, this lightweight, disposable mask offers reliable particulate protection in a convenient pack of 10, ideal for workplace safety and anti-pollution needs.

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Brand	3M
Manufacturer	3M India Limited
Model number	8511PB1-A-PS
Colour	White
Number of Memory Sticks	2
Special Feature	Disposable
Item Weight	141 g
Product Dimensions	12.7 x 15.75 x 21.59 cm; 140.61 g
Item model number	8511PB1-A-PS
Item Height	8.5 Inches
Item Width	6.2 Inches
Included Components	Mask
Are batteries included?	No
External Certification	42 CFR 84

3M 8511 Disposable Respirator N95 Cup Face Mask, Non Woven Fabric, Exhalation Valve, Metal Nose Clip and Elastic Headband Particulate, Anti Air Pollution Respirator With Filter(Pack of 10)

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