Sabtu, 14 Juni 2014

The Protection Ability Of N95 Respirators

By Ina Hunt


Respirators are very important items when it comes to protection against germs and chemicals that can be inhaled. There are about seven types of respirators, and of all these, the n95 respirators are the most commonly used. They have up to 95 % effectiveness in terms of particulate filtering. This means only a few particles can manage to find their way into the respiratory system of the user. It is, however, incapable of filtering oil particles and, hence, preventing them 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.

Share a n95 respirator is not advisable. This is normally given as a warning to avoid movement of harmful substances from a person others due to the contamination of the filter. Each one should, therefore, have his/her own equipment for safety. This way, the probability of meeting harmful substances is very much minimized.

For efficiency, the respirator must be very fitting on the face of the wearer. Proper fitting prevents possibilities of leakages. To confirm whether the filter is fitting, the wearer should adjust the strings and ensure tightness and comfort on the face. Mirrors can as well be used by the wearer to ensure that it is properly worn.

The n95 tag simply means that when tested, the equipment blocks up to a maximum of 95% of unwanted particles. However, with proper wearing, they are capable of attaining a higher efficiency than this. This high efficiency does not, however, give an assurance of absolute protection from illnesses. This is because some harmful particles will always find their way out. People with chronic respiratory problems should consult their doctors before using these gadgets.

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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