Are n99 Masks Washable?

Face masks, respirators, and other Personal Protection Equipment (PPE), are crucial. These devices are essential for construction, medicine, and many other industries. The n99mask 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. These masks have two principal defining characteristics: 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 ensure that the N99 respirator seals tight and has high filtration.

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 useful life is dependent upon its filters, which are the most important element of any efficient face mask. You should consider the quality, type, number, and frequency of filters that your N99 face mask will use. Carbon filters filter out bacteria, viruses, and chemicals the best. N99 Masks with micro-ventilators or breathing valves make breathing and speaking easier. N99 masks come in various sizes; ensure that the one you choose covers your entire mouth, nose, and chin. It is useless to use a face mask that doesn’t fit correctly. Use certified N99 masks.Reusable 99 masks can be an economical and environmentally-friendly option. However, they come at a higher upfront cost. N99 masks can be used to aid in breathing if you are active or have difficulty with your breathing.

Extending the Use of N99 Masks

N99 masks are disposable filtering respiratory protectors. You should only use them once and only once. If your N99 mask becomes contaminated or is exposed to harmful particles during the day, you should throw it out. However, in an era where so many people use respirators and masks all day, the CDC has provided information on how to sterilize N99 face masks. Although they do not recommend that you reuse masks, you can sterilize N99 masks for reuse in an emergency.

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

Three methods are showing the most potential to decontaminate N99 masks: using moist heat, vaporous hydrogen peroxide, or exposing the masks to UV radiation. Note that every mask should get inspected for damage or degradation and pass a seal check before being worn again. A group of doctors, scientists, and other professionals formed a group called N95DECON to research and test different sanitizing methods for face masks. These methods have been thoroughly researched but have not yet been tested extensively.


This kills both resistant bacteria spores as well as viruses. 3M has used this method to sanitize masks up to 20 times without seeing any degradation, but when sterilized with higher doses, the filters become less efficient. Sanitizing machines can be dangerous and require extensive training.


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. The mask’s material can be damaged by high doses of UV light.

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 masks with steam and liquid hydrogen peroxide. They sterilized the masks with steam bags using low-power microwaves. They found that the N99 respirator could be soaked in 6% liquid hydrogen peroxide for 30 minutes, which did not affect its filtration. However, they did not test the fit 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. Do not use alcohol or bleach. This can affect the mask’s ability efficiently to filter toxic substances. Assume it’s clean after overnight storage; the coronavirus can survive for three or more days on certain materials. 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.