Thursday, June 19, 2014

N95 Respirators; How They Work

By Ina Hunt


It is very important for a person to protect him/herself whenever he/she come into contact with harmful particles. N95 respirators are rated among the seven best filters. They are said to provide up to 95% protection against harmful particles. Very few particles are, therefore, capable of passing through the respirator to reach the user. This filter does not, however, block oil particles from reaching the wearer.

Contaminated air is usually passed through the filters and unwanted molecules are retained while particles that are not harmful reach the respiratory system. In the manufacture of these respirators, cotton, glass, plastic and some other materials are the commonest materials used. They are the best when it comes to retaining unwanted particles. They are mostly preferred since they can be easily disposed, and they are not as costly as other types of filters.

There are various ways techniques involved in preventing particles that are not required. Firstly, the flow of air is restricted to one radius. This way, only small particles will penetrate the filter. Larger particles are not capable of following a curving contour. A movement similar Brownian motion also helps in preventing of harmful particles from passing through the respirator. There are also some special waxes, resins and plastics used for the purpose of coating the respirator. These create an electrostatic force that retains the unwanted particles.

Manufacturers of this product also made it in a way such that, the velocity of air entering it is low. This is possible due to the manipulated slope and shape of this product. The manipulation is always done with the view of increasing the surface area. This means particles moving at a low velocity can be easily blocked as compared to fast moving ones.

This respirator should never be shared. This is a precaution since sharing exposes other wearers to contaminated particles that may cause them health problems. It is good for everybody to have a filter of his/her own. Doing this reduces the likelihood of passing on contaminated particles from a respirator used by one person to another person.

For this product to be efficient, the user must ensure that is very fitting on his/her face. Tightness is attainable through the adjustment of the straps. He/she must at the same time ensure that the respirator is comfortable on his/her face. They can as well use a dressing mirror to ensure that it is properly fitting.

The name n95 alludes to the fact that the device provides 95% prevention of harmful molecules from reaching the wearer. This fact should, however, not confuse the user to think that it provides absolute protection. It is possible for some molecules of unwanted substances to find their way into the respiratory system of the user. Individuals who have had histories of chronic respiratory defects should visit their doctors before using this equipment.

There is no n95 equipment for children and people who have hair in their faces. This is the case because it is not possible to attain tightness with these people. When these people use them, they may not be very effective.




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