Sunday, 15 June 2014

The Working 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.

All molecules are usually taken through the respirators and unwanted elements are retained. The particles that remain are allowed to reach the wearer. During the manufacture n95 filters, cotton, plastic, glass and other special materials are combined. These are considered the best materials for retaining unwanted molecules. They are commonly preferred because of their ability to be easily disposed. Besides this, they are cheaper as compared to other filters.

These items carry out the filtering process through various ways. They first of all prevent entry of small particles by restricting the flow of air to a single radius. Larger particles are prevented through their inability to follow a continuously curving contour. A movement involving constant collision of particles further contributes to a restricted passage of particles through the filters. Some resins, plastics and waxes are also used in coating the respirators. These materials have and electrostatic force of attraction that keeps particles on the surface of the filter.

Further prevention of particle entry is enhanced through the minimization of the velocity of particles passing through the filter. To achieve this, the shape and slop of the filter is manipulated to create a large surface area. It should, thus, be easier to prevent particles moving at a low velocity than those traveling at a high velocity.

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 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 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 are no fitting n95 filter for minors and people whose faces are hairy. This happens due to the fact that their faces cannot allow the respirators to fit tightly on them. The effectiveness of these gadgets when they are used by these categories of people is, therefore, reduced.




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