Have you ever heard the term mask or respirator N95, R95, or P95? For industrial workers whose daily activities are in areas with exposure to harmful particles in the air, may be familiar with this type of breathing protector. So, what’s the difference with ordinary masks? What does the N95, R95, and P95 code say on the respirator? The N95, R95, or P95 codes on the respirator indicate the type of filter used on the respirator. Respirators with filter codes N95, R95, P95, and other series include a disposable water-purifying respirator or respirator type with a disposable air purifier. This respirator is able to filter harmful particles up to a size of 0.3 microns, the particles with the highest penetration rate or the most difficult to catch. For that, you are very important to understand the code listed in the mask and you can get more information at https://homepractical.com/best-dust-mask/.
For example, for a respirator with an N95 filter code, this means that the respirator has a 95% filter efficiency on particles of 0.3 microns. The National Institute for Occupational Safety and Health (NIOSH) divides the disposable respirator type filter into three series, including; N Series (Not resistant to oil). Can not be used in environments or atmospheres containing aerosol oil or can only be used in an environment free from oil particles. R Series (Resistant oil). Can be used in environments or atmospheres containing oil particles and non-oil particles with a time limit of use determined by NIOSH. P Series (Oil proof). Can be used in environments or atmospheres containing oil particles and non-oil particles with a time limit of use determined by the manufacturer.
Seven NIOSH approved filter respirator classes are currently available. The 95% figure is the minimum penetration level on filters approved by NIOSH. Here is the meaning of the N Series, R Series, and P Series filter codes on disposable respirators; N95 – Able to filter harmful particles up to 95% (efficiency greater than or equal to 95%). Not resistant to oil-containing particles. N99 – Able to filter harmful particles up to 99% (efficiency greater than or equal to 99%). Not resistant to oil-containing particles. N100 – Capable of filtering out hazardous particles up to 99.97% (efficiency greater than or equal to 99.97%). Not resistant to oil-containing particles.