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Guide-to-buy-n95s
2020-07-13

Working principle of N95s
N95s have a great filter Electrostatic Media that can be rated with 95% or higher efficiencies at least 0.3 microns.
It works by protecting you from breathing in harmful particles that can cause lung and body disease, like the much-feared coronavirus(COVID-19/NCOV 19) droplet >0.3 microns.
Also, it works by blocking small particles and disease.
Functional N95 respirators
1.An N95 respirator is a respiratory protective device designed to achieve a very close facial fit and very efficient filtration of airborne particles.
2.The N95 designation means that when subjected to careful testing, the respirator blocks at least 95 percent of very small (0.3 micron) test particles.
3.If properly fitted, the filtration capabilities of N95 respirators exceed those of face masks. Technically block 95% virus, however even a properly fitted respirator does not 100% completely eliminate the risk of illness or death.
4.An N95 respirator is not designed for very long time usage. It should be abandon after 4-6 days daily usage, or 1-2 days usage in high risk.
The grade of masks by usage

Dust proof masks
Only block dust and spray, not designed for block virus Not qualified for blocking any virus.


Medical disposal masks

·Designed for germs and virus protection.
·Can block some spray which contains coronavirus, some coronavirus droplet.
·Wear it during daily use, public transportation, taxi driver, social workers and public service.
·It’s cheap and disposal.


Medical surgical disposal masks
·Designed for germs and virus protection. Can block some spray which contains coronavirus.
·Wear it during daily use, public transportation, taxi driver, social workers and public service.
·Reduces some coronavirus droplet and much of the chance of infection ·It’s cheap and disposal


KN95/FFP2
Designed for PM2.5 and micron virus protection. Can block 95% particles and spray which contains coronavirus.
·Wear it if have risk contacting with infected persons when going out, shopping or small gatherings.
·Reduces most of the chance of infection


N95
FDA / NIOSH Approved ,Designed for micron virus protection.
·Can block 95% 0.3 um non-oil particles and spray which contains coronavirus.
·Wear it if taking risk contacting with infected persons when going out, shopping or small gatherings.
·Reduces most of the chance of infection


Surgical N95
·NIOSH NPPTL lab tested, Can block 95% 0.3 um non-oil particles and spray.
·Designed for medical surgical protective mask (Tight, headworn, no valve).
·Wear it if have high risk be infected such as at hospital or facing or contacting patients.
·Designed for protect from blood virus , protect from both sides for wearer and others.
·Reduces almost all of the chance of infection

Legal certificate organization of N95 in US

FDA Approved : use in the US and confirmed quality safety in accordance with US laws and regulations .

NIOSH Approved: The National Institute for Occupational Safety and Health, Qualified For CDC medical usage.

NIOSH NPPTL lab: N95 Particulate Filtering test.

OSHA : The Occupational Safety and Health Administration.

What's PFE, BFE? What's the meaning of N, R? What are droplet precautions?

PFE = Particulate Filtration Efficienc of 0.3 micron particles

BFE = Bacterial Filtration Efficiency

N = NOT resistant to oil, indicating that the filter material cannot be used in the environment containing oil and gas;

R = resistant to oil, indicating that the filter material has the ability to isolate oil and gas within 8 hours;

P = oil proof, indicating that oil and gas can be completely isolated.

Droplet prevention is to prevent the spread of infectious substances, large particle droplets and aerosols at close range (3 feet away) by wearing surgical masks or higher protective efficiency masks. These droplets are usually produced when patients cough and blow their noses.

Comparing Surgical disposable Masks and Surgical N95 Respirators
The FDA regulates medical surgical disposable masks and surgical N95 respirators differently based on their intended use.

A (medical disposable)surgical mask is a loose-fitting, disposable device that creates a physical barrier between the mouth and nose of the wearer and potential contaminants in the immediate environment. These are often referred to as face masks, although not all face masks are regulated as surgical masks. Note that the edges of the mask are not designed to form a seal around the nose and mouth.

An N95 respirator is a respiratory protective device designed to achieve a very close facial fit and very efficient filtration of airborne particles. Note that the edges of the respirator are designed to form a seal around the nose and mouth. Surgical N95 Respirators are commonly used in healthcare settings and are a subset of N95 Filtering Facepiece Respirators (FFRs), often referred to as N95.

The standard of N95s should be tested by Particulate Filtration Efficienc of 0.3 micron particles(PFE), and the standard of medical surgical disposable masks should be tested by Bacterial Filtration Efficiency(BFE).

The similarities among surgical masks and surgical N95 are:
They are tested for fluid resistance, filtration efficiency (particulate filtration efficiency and bacterial filtration efficiency), flammability and biocompatibility.
They should not be shared or reused for many times.

Suggested selection for usage occasions
  • Sugical Medical/ Isolation:
    They are rigorously tested for medical usage by CDC NIOSH NPPTL laboratory, designed for surgical and they fit tightly to the face, preventing from various blood viruses. Both protect wearer and others.

    3M 8210CN N95 Particulate Respirator Mask Medical Surgical NIOSH Box of 20pcs 3M 8210CN Makrite N95 MK9500 Particulate Respirator FDA NIOSH Approval Face Mask Cup Headband Box of 20pcsMakrite 9500 Safety Visor Adjustable Face Cover Shield Transparent Full Face Protective Mask Facial Hat 1set x10pcsSafety Visor Topsafe N95
  • Gerneral Medical:
    They are tested for medical usage by CDC NIOSH, designed for medical , nurse. If they have valve, only protect wearer because the exhaled air is not filtered.

    3M 8210CN N95 Particulate Respirator Mask Medical Surgical NIOSH Box of 20pcs 3M 8210CN 3M 8511 Pro N95 Mask Respirator with Valve Particulate PB1-AP-S Box of 10pcs3M 8511 3M 8210Vcn N95 Particulate Respirator Mask with exhale valve NIOSH  Approved Box of 10pcs3M 8210VCN Makrite N95 MK9500 Particulate Respirator FDA NIOSH Approval Face Mask Cup Headband Box of 20pcsMakrite 9500 Safety Visor Adjustable Face Cover Shield Transparent Full Face Protective Mask Facial Hat 1set x10pcsSafety Visor NIOSH Approved GIKO1200 N95 Respirator Medical Face Mask Box of 20pcsGIKO1200
  • Medical care:
    They are tested for medical usage, can be used by nurse, home care etcs.

    Makrite N95 MK9500 Particulate Respirator FDA NIOSH Approval Face Mask Cup Headband Box of 20pcsMakrite 9500 3M 8210Vcn N95 Particulate Respirator Mask with exhale valve NIOSH  Approved Box of 10pcs3M 8210VCN NIOSH Approved GIKO1200 N95 Respirator Medical Face Mask Box of 20pcsGIKO1200 Certified FDA Creative Design Protective Mask Blue  Pack of 5pcsFashion blue n95 Safety Visor Adjustable Face Cover Shield Transparent Full Face Protective Mask Facial Hat 1set x10pcsSafety Visor Medical Face Masks Disposable for social usage 1pack of 50pcsMedical disposable
  • Travel/flight/ Meeting:
    They are qualified for social isolation, easy to carry, good-looking and durable for long time.

    3M 8511 Pro N95 Mask Respirator with Valve Particulate PB1-AP-S Box of 10pcs3M 8511 3M 8210Vcn N95 Particulate Respirator Mask with exhale valve NIOSH  Approved Box of 10pcs3M 8210VCN Certified FDA Creative Design Protective Mask Blue  Pack of 5pcsFashion blue n95
  • Office work:
    They are qualified for isolation in office, cost-effectively, easy to carry and good-looking.

    Certified FDA Creative Design Protective Mask Blue  Pack of 5pcsFashion blue n95FRONTIER FFP1S N90 Protective Face Mask Pack of 10pcsFrontierN90 FDA Approval Folding Face Masks Respirator with Valve box of 15pcsFolding N95-KN95 valve KN95 Mask Respirator Sealed Pack FDA Approved 20pcsN95-KN95 Medical Face Masks Disposable for social usage 1pack of 50pcsMedical disposable
  • Social contact:
    They are qualified for social distance, cost-effectively, good-looking.

    3M 8210Vcn N95 Particulate Respirator Mask with exhale valve NIOSH  Approved Box of 10pcs3M 8210VCN Certified FDA Creative Design Protective Mask Blue  Pack of 5pcsFashion blue n95 Reusable Silica Gel Respirator Shield Mask With 30pcs FilteringReusable Silica Gel Shield hand hand sanitizer TOMSON NEWT KN95 Respirator MasksKN95 Medical Face Masks Disposable for social usage 1pack of 50pcsMedical disposable
  • Industry:
    They are qualified for isolation from both virus and particles. Also easy to breath, will not effect work

    3M 8511 Pro N95 Mask Respirator with Valve Particulate PB1-AP-S Box of 10pcs3M 8511 3M 8210Vcn N95 Particulate Respirator Mask with exhale valve NIOSH  Approved Box of 10pcs3M 8210VCN Reusable Silica Gel Respirator Shield Mask With 30pcs FilteringReusable Silica Gel Shield Safety Visor Adjustable Face Cover Shield Transparent Full Face Protective Mask Facial Hat 1set x10pcsSafety Visor KN95 Mask Respirator Sealed Pack FDA Approved 20pcsN95-KN95 FDA Approval Folding Face Masks Respirator with Valve box of 15pcsFolding N95-KN95 valve
  • Food making/ retails:
    They are qualified for isolation from virus, cost-effectively, also stop spay, make consumers feel healthy.

    KN95 Mask Respirator Sealed Pack FDA Approved 20pcsN95-KN95 TOMSON NEWT KN95 Respirator MasksKN95 FDA Approval Folding Face Masks Respirator with Valve box of 15pcsFolding N95-KN95 valve Medical Face Masks Disposable for social usage 1pack of 50pcsMedical disposable
  • Home application:
    Easy to put on and easy carry, cost-effectively, protect the health of family.

    Hopkins Thermometer Temperature Temple Touch ScannerHopkins Thermometer Certified FDA Creative Design Protective Mask Blue  Pack of 5pcsFashion blue n95KN95 Mask Respirator Sealed Pack FDA Approved 20pcsN95-KN95 Medical Face Masks Disposable for social usage 1pack of 50pcsMedical disposable
  • How much time a N95 can be reused? How to clean the surface after 1 day use?

    A N95 was designed using for 4-5 days. A high-quality N95 is more durable but not suggested using for more than a week. Also if used in high risk area the time will be shorter. Look the surface if turns dark and not refresh should discard it.

    After 1 day use, DONT touch surface by hand when taking down, DONT wash using water or 75% achohol. Should wash your hands after taking down.

    If you want to clean the surface and have no professional device, you can expose it in sunshine for 20-30 minutes, the radiation and temperature can kill the covid on surface, also a UV lamp works. see the detailed article.

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