What's the Difference Between N95 and KN95 Masks?

The National Institute for Occupational Safety and Health has developed standards to protect workers from hazardous airborne particles. NIOSH-approved N95 masks reduce the number of harmful particles that can enter a person’s lungs. The main difference between NIOSH-approved N95 masks and another type of respirator called a “kn95 mask” is the filtration level. Respirators with lower filtration levels are called simply kn95 masks, while those with higher filtration levels are known as N95 masks. Here is more information on the difference between these two types of respirators:

N95 Masks

N95 respirators are the most popular type of mask and are considered a high level of protection. They are designed to filter out 95% of all airborne particles. These masks are only approved for use where there is a known airborne toxic agent, or where a specific occupational setting requires the use of a mask. Due to the high level of filtration, healthcare workers, those in chemical labs, welders and other occupations that work with high levels of particulate matter in the air, such as demolition and paper mills, should use N95 respirators. They are considered a high level of protection. They are designed to filter out 95% of all airborne particles. These masks are only approved for use where there is a known airborne toxic agent, or where a specific occupational setting requires the use of a mask. Due to the high level of filtration, healthcare workers, those in chemical labs, welders and other occupations that work with high levels of particulate matter in the air, such as demolition and paper mills, should use N95 respirators.

KN95 Masks

KN95 masks are usually used in lower-risk environments. They offer a level of protection of 95% against airborne particles, which meets the requirements for most workplaces. In some instances, an employer may require the use of a KN95 mask. For example, a paper mill that emits particulate matter above a certain level may require the use of a kn95 mask. They are not approved for use where there is a known airborne toxic agent, or where a specific occupational setting requires the use of a mask. Due to the lower filtration level, healthcare workers, those in chemical labs, welders and other occupations that work with high levels of particulate matter in the air, such as demolition and paper mills, should use N95 respirators.

What is the difference between N95 and KN95 masks?

- N95 masks are designed to filter out 95% of harmful airborne particles. This level of filtration has been shown to reduce the amount of particulate matter that can enter the lungs. 

- KN95 masks are not designed to filter out any airborne particles and are only approved for use in lower-risk environments.

Which Masks are Recommended?

There are two types of respirators to consider: N95 masks and full-face respirators. N95 masks provide high-level protection and are used where there is a known airborne toxic agent, or where a specific occupational setting requires the use of a mask. Fully-face respirators are more effective at protecting against particles and gases than N95 masks and can be used in any workplace. They can be used to filter out microscopic particulates as well as larger airborne particles.

Why Are Some Masks More Effective Than Others?

As with any piece of personal protective equipment, the effectiveness of a respirator depends on the person wearing it. All respirators have some level of resistance to airborne particles. The type of respirator a user chooses has an impact on the effectiveness of protection it offers. The difference between an N95 mask and a KN95 mask comes down to filtration level. Masks with more filtration offer better protection against harmful airborne particles and can protect against certain gases as well. The level of filtration a respirator provides depends on the type of respirator and the type of contaminant being protected against. Different respirators can offer different levels of filtration depending on the manufacturer.

How to Select an Effective Mask?

A person should select a respirator based on the level of protection needed, as well as the type of respirator and the type of hazard they may be exposed to. 

- Select a respirator that provides the level of protection needed. - Be sure the respirator is approved for use where the hazard exists.

- Ensure the respirator is used properly.

- Check the mask for leaks and proper fit.

- Use the following guidelines when selecting a respirator.

- Fit tests should be done with a properly sized respirator.

- Be sure to follow the manufacturer’s instructions for use.

- Wear the respirator when needed.

- Perform regular maintenance on the equipment to ensure it is working properly.

Conclusion

In the final analysis, the choice between an N95 mask and a KN95 mask comes down to personal preference and the level of protection required in a specific setting. However, the choice between these two types of respirators should not be based solely on brand name or price. Both types of masks can be used effectively to protect against harmful airborne particles, and the choice between them depends on the risk level, type of contaminant and type of respirator being used. N95 masks are generally more expensive than KN95 masks and offer a higher level of filtration. Therefore, they are more expensive to purchase, operate and maintain compared to KN95 masks, which are usually less expensive. Masks with a higher filtration level are more effective at protecting against harmful particles, gases and mists. However, the most effective protection comes from selecting the correct mask for the environment, using the correct mask, and following the correct procedures for use of the mask.