Are n99 Masks Washable?

Face masks and respirators are essential Personal Protection Equipment (PPE). These devices are essential for construction, medicine, and many other industries. The n99 masks is used to filter out harmful particles and prevent the spread and contraction of infectious diseases. The n99 mask are the most effective face-covering option available, but many people want to know what to look for when purchasing one and if they can wash and reuse them.

What Are N99 Masks?

N99 masks or a n99 masks is a specific type of face-covering to filter what the user is breathing in. N99 Mask is a face-covering designed to filter the air that is being inhaled. Two main characteristics of these masks are: N99 Masks form a tight seal against your face so that when you breathe in, the airflow coming in and out of your nose and mouth passes through the filtration material without leaking from the mask’s edges. N99 mask materials should be capable of capturing at least 99% particles from the user’s nose and mouth while they breathe. These characteristics mean that, unlike ordinary cave coverings, the N99 respirator seals tightly and has a high filtration capacity.

What to Consider When Buying an N99 Mask

N99 masks offer the best protection by filtering out 99.9% of airborne particles. However, they don’t all provide equal protection.Here are some things you should consider before purchasing an N99 mask. The mask’s life expectancy is directly related to its filters. Consider the quality, type, and number of filters that your N99 mask will use. Carbon filters are the most efficient at filtering out viruses, bacteria, and chemicals. N99 Masks with micro-ventilators or breathing valves make breathing and speaking easier. N99 masks come in a range of sizes. Be sure to choose one that covers your entire mouth, nose, and chin. An unfit face mask is useless. Buy certified N99 masks; you want to use one that’s of the highest quality possible.Reusable N99 masks are an environmentally friendly and economical option, but they have a higher up-front cost. If you engage in lots of physical activity or already have breathing difficulties, you can find N99 masks with two breathing valves to help you breathe easier.

Extending the Use of N99 Masks

N99 masks are disposable filtering respiratory protectors. It is best only to use one mask per day. Discard your N99 mask whenever it becomes contaminated or exposed to dangerous particles throughout the day. The CDC has information about how to sterilize N99 Masks when many people wear respirators all day. They don’t recommend you reuse masks except in an emergency. However, you can sterilize your N99 face mask for reuse.

These are the requirements for safe sterilization of an N99 mask washable:

The mask must remain effective against COVID-19. The sterilization must not affect the filtration capabilities. It must not have an impact on the fit of the user’s face. The mask must still be safe for the user.

These methods of decontamination are not recommended for N99 Masks:

Ethylene Oxide causes concerns for off-gassing. Ionizing Radiation can degrade filter performance. The use of microwaves can melt the respirator near metal components and compromise the fit. Autoclaves, high temperatures, and steam can cause filter degradation.

Sterilizing N99 Masks for Reuse

The three most powerful methods to disinfect N99 Masks are moist heat (vaporous hydrogen peroxide), UV radiation, and using moisture. Before being worn again, every mask must be inspected for damage or degrading and a seal checked. To test and explore different methods of cleaning face masks, a group of scientists, doctors, and other professionals created N95DECON. Although these methods have been extensively researched, extensive testing has not yet taken place.


This kills both resistant bacteria spores as well as viruses. 3M has used this method for fixing masks up 20 times without any degradation. But, when sterilized at higher doses, the filters become less effective. The machines to perform sanitizing are dangerous and require extensive training for the operator.


UV radiation can kill coronavirus viruses, but it does not affect the masks’ ability to filter for sterilizations of 10-20. However, the UV light can break down the straps and face pieces, and it can be challenging to expose the lower layers to the radiation. High UV light doses can cause the mask to be brittle.

Heat and Humidity

Heating N99 masks at 60-75 degrees C for half an hour can stop viruses related to COVID-19, but it has not been tested on the coronavirus itself.This is an effective method to sanitize facemasks, as heating them at 60 degrees C and 80% humidity does not seem to damage their filtration capabilities.

Steam and Liquid Hydrogen Peroxide

The CDC also tested sterilizing the masks using steam and liquid hydrogen peroxide. They used steam bags in low-powered microwaves to kill bacteria without damaging the face mask up to three times. They also noted that soaking an N99 respirator in 6% liquid hydrogen peroxide for half an hour didn’t affect filtration, but they did not test fit integrity afterward. Do not use soapy water to sterilize N99 masks. This can cause damage to the mask’s materials and reduce its ability to filter small particles. Avoid using bleach or alcohol; it can reduce the mask’s effectiveness in filtering toxic materials. Consider it clean after overnight storage. Certain materials can withstand the coronavirus for three to five days. It is crucial to purchase washable N99 masks from a trusted source. Bielcor is a safety leader and only offers products that have been thoroughly researched and field-tested.