FFP2 Masks: What Does “NR” Mean?
In addition to understanding the mean of NR, we have a lot to know about the FFP2 masks, such the material, purchase guide and relevant cleaning problem and so on. Now, let’s take a look at this article.
What does “NR” mean?
R: can be reused
NR: cannot be reused
D: passed the dolomite blocking test
We already know that FFP masks refer to masks that meet the European (CEEN1409:2001) standard. They have three levels, FFP1, FFP2, FFP3, and the lowest filtering effect is 94%. Although the minimum filtering effect is 1% worse than the Chinese mask standard KN95, its test conditions are more stringent. The test flow rate used by KN95 is 85L/min, while the test flow rate used by FFP2 is 95L/min. And unlike KN95, which only has a filtering effect on non-oily particles (the test medium is NaCL, i.e. sodium chloride), FFP2 has a filtering effect on non-oily particles and oily particles (the test medium is DOP, i.e. paraffin oil), in a certain sense FFP2 has higher protection requirements and standards than KN95.
Instrument for detecting FFP2 masks
Whether it is a European standard or an American standard, the US TSI-8130 Automated Filter Testers is designated for testing. The American standard uses the NaCl method for the N type, the R type uses the DOP method, and the European standard uses the DOP method.
The TSI-8130 instrument uses the NaCl method: the instrument can automatically generate salt particles, the average diameter of the particles is 0.2μm (aggregate average diameter 0.26μm, arithmetic average diameter 0.07μm) after the sample is set to pass through the sample under a certain flow, the instrument automatically prints out Flow, resistance, transmittance.
In the DOP method, DOP oil is used to generate dust. The particle diameter of DOP oil is 0.33μm in aggregate average particle diameter and 0.20μm in count average diameter.
|Mask level||Flow/L.min-1||Penetration rate%||ResistancemmH2O/pa|
Different FFP2 types of masks use different filter materials. For one thing, the filtering effect is linked to the particle size of the particles, and it is also affected by whether the particles contain oil. FFP2 masks are usually classified by filtration efficiency, and classified according to whether they are suitable for filtering oily particles. Oil-free particulate matter such as dust, water-based mist, oil-free fumes (welding fumes), microorganisms, paint mist, etc.
1. Disposable anti-particulate mask: alias: "non-reusable FFP2 mask", the anti-particulate disguise agrees with for temporary use in polluted environments.
2. One-half face disguise: alias: "FFP2 face mask", "dirt mask", "dirt face mask" along with exhaling valve design, lessening heat energy accumulation, creating breathing less complicated, suitable for long-term use in heat and also high humidity environments. Safe, Tasteless, non-allergic, non-irritating basic materials.
High purification effectiveness, reduced protection, modifiable nostrils clip, produce the disguise and also skin even more securely secured, dust can easily certainly not quickly leakage right into the electrostatically handled filter layer, efficiently filter and take in incredibly great hazardous industrial dust, and stop silicosis ultrasound assembly, the rubber band of spandex silk component safeguards the wearer better. Application: azamethiphos insecticide suppliers, recessed pure aluminium downlight shell, clear acetate glasses frames, matt tiles and other dust caused by cutting, aluminum glitter powder industry, frozen organic water chestnut, beef vacuum packaging and other food processing industries.
3. Full-face mask: alias: dust-proof full-face mask, it is applied to special environments.
Cleaning of FFP2 masks
The outer layer of FFP2 masks tends to accumulate a lot of dust, bacteria and other dirt in the outside air, while the inner layer blocks the exhaled bacteria and saliva. Therefore, the two sides cannot be used alternately, otherwise the dirt on the outer layer will be directly exposed. It becomes a source of infection by inhaling the body when it is close to the face. When you are not wearing the mask, you should fold it into a clean envelope and fold the side close to your nose and mouth. Don't just put it in your pocket or hang it around your neck.
FFP2 masks are similar to N95 and KN95 masks and cannot be cleaned. Because it gets wet, the mask will release static electricity and cannot absorb dust with a diameter of less than 5um.
High-temperature steam disinfection is similar to cleaning. Water vapor will also cause static discharge, which will cause the mask to fail.
If you have a UV lamp at home, you can consider using it to sterilize the surface of the mask to prevent accidental contact with the surface of the mask and cause pollution. High temperature can also be sterilized, but masks are usually flammable materials. High temperature may also cause masks to burn, causing safety hazards. It is not recommended to use ovens and other facilities for high-temperature disinfection.
Here are FFP2 NR masks worthy your consideration
FFP2 NR particulate FIltering respirator Mask
Any interests in nice FFP2 NR masks, click here to get more inforamtion.
China White List Mask ManufacturerDust Proof Respirators Face Masks Medical Face Mask Surgical Equipment Face Mask With Filter
$ 0.15 ~ $ 0.50
Runcer strong protection masks disposable medical sanit Level 3 surgical masks tie back medical masks for virus protection
$ 0.15 ~ $ 0.50
Factory direct sales disposable non-woven -3 ply medical face mask manufacturer supplier
$ 0.05 ~ $ 0.12
Runcer Disposable Surgical Blue Face Masks Protective 3 Ply Breathable MasksTriple Layer Mouth Cover with Elastic Earloops
$ 0.05 ~ $ 0.12
Wholesale CE 3-ply disposable surgical bandage mask Clinical Bandage Disposable Medical Face Mask Manufacturer Doctor Masks
$ 0.10 ~ $ 0.22